diff --git a/services/core/java/com/android/server/pm/DexOptHelper.java b/services/core/java/com/android/server/pm/DexOptHelper.java
index 1ee0b83..adb5084 100644
--- a/services/core/java/com/android/server/pm/DexOptHelper.java
+++ b/services/core/java/com/android/server/pm/DexOptHelper.java
@@ -40,7 +40,6 @@
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.RequiresPermission;
-import android.app.ActivityManager;
 import android.app.AppGlobals;
 import android.content.Context;
 import android.content.Intent;
@@ -59,8 +58,6 @@
 import android.util.Log;
 import android.util.Slog;
 
-import com.android.internal.R;
-import com.android.internal.annotations.GuardedBy;
 import com.android.internal.logging.MetricsLogger;
 import com.android.server.LocalManagerRegistry;
 import com.android.server.art.ArtManagerLocal;
@@ -99,18 +96,6 @@
 
     private final PackageManagerService mPm;
 
-    public boolean isDexOptDialogShown() {
-        synchronized (mLock) {
-            return mDexOptDialogShown;
-        }
-    }
-
-    // TODO: Is this lock really necessary?
-    private final Object mLock = new Object();
-
-    @GuardedBy("mLock")
-    private boolean mDexOptDialogShown;
-
     DexOptHelper(PackageManagerService pm) {
         mPm = pm;
     }
@@ -128,7 +113,7 @@
      * which are (in order) {@code numberOfPackagesOptimized}, {@code numberOfPackagesSkipped}
      * and {@code numberOfPackagesFailed}.
      */
-    public int[] performDexOptUpgrade(List<PackageStateInternal> packageStates, boolean showDialog,
+    public int[] performDexOptUpgrade(List<PackageStateInternal> packageStates,
             final int compilationReason, boolean bootComplete)
             throws LegacyDexoptDisabledException {
         Installer.checkLegacyDexoptDisabled();
@@ -220,18 +205,6 @@
                         + numberOfPackagesToDexopt + ": " + pkg.getPackageName());
             }
 
-            if (showDialog) {
-                try {
-                    ActivityManager.getService().showBootMessage(
-                            mPm.mContext.getResources().getString(R.string.android_upgrading_apk,
-                                    numberOfPackagesVisited, numberOfPackagesToDexopt), true);
-                } catch (RemoteException e) {
-                }
-                synchronized (mLock) {
-                    mDexOptDialogShown = true;
-                }
-            }
-
             int pkgCompilationReason = compilationReason;
             if (useProfileForDexopt) {
                 // Use background dexopt mode to try and use the profile. Note that this does not
@@ -364,9 +337,7 @@
         boolean causeUpgrade = mPm.isDeviceUpgrading();
 
         // First boot or factory reset.
-        // Note: we also handle devices that are upgrading to N right now as if it is their
-        //       first boot, as they do not have profile data.
-        boolean causeFirstBoot = mPm.isFirstBoot() || mPm.isPreNUpgrade();
+        boolean causeFirstBoot = mPm.isFirstBoot();
 
         if (!causeUpgrade && !causeFirstBoot) {
             return;
@@ -377,7 +348,7 @@
                 getPackagesForDexopt(snapshot.getPackageStates().values(), mPm);
 
         final long startTime = System.nanoTime();
-        final int[] stats = performDexOptUpgrade(pkgSettings, mPm.isPreNUpgrade() /* showDialog */,
+        final int[] stats = performDexOptUpgrade(pkgSettings,
                 causeFirstBoot ? REASON_FIRST_BOOT : REASON_BOOT_AFTER_OTA,
                 false /* bootComplete */);
 
diff --git a/services/core/java/com/android/server/pm/PackageManagerService.java b/services/core/java/com/android/server/pm/PackageManagerService.java
index 5b42a0b..82fc912 100644
--- a/services/core/java/com/android/server/pm/PackageManagerService.java
+++ b/services/core/java/com/android/server/pm/PackageManagerService.java
@@ -588,7 +588,6 @@
     private final int mDefParseFlags;
     private final String[] mSeparateProcesses;
     private final boolean mIsUpgrade;
-    private final boolean mIsPreNUpgrade;
     private final boolean mIsPreNMR1Upgrade;
     private final boolean mIsPreQUpgrade;
 
@@ -1734,7 +1733,6 @@
         mInstantAppResolverConnection = testParams.instantAppResolverConnection;
         mInstantAppResolverSettingsComponent = testParams.instantAppResolverSettingsComponent;
         mIsPreNMR1Upgrade = testParams.isPreNmr1Upgrade;
-        mIsPreNUpgrade = testParams.isPreNupgrade;
         mIsPreQUpgrade = testParams.isPreQupgrade;
         mIsUpgrade = testParams.isUpgrade;
         mMetrics = testParams.Metrics;
@@ -2069,10 +2067,6 @@
             mPromoteSystemApps =
                     mIsUpgrade && ver.sdkVersion <= Build.VERSION_CODES.LOLLIPOP_MR1;
 
-            // When upgrading from pre-N, we need to handle package extraction like first boot,
-            // as there is no profiling data available.
-            mIsPreNUpgrade = mIsUpgrade && ver.sdkVersion < Build.VERSION_CODES.N;
-
             mIsPreNMR1Upgrade = mIsUpgrade && ver.sdkVersion < Build.VERSION_CODES.N_MR1;
             mIsPreQUpgrade = mIsUpgrade && ver.sdkVersion < Build.VERSION_CODES.Q;
 
@@ -2954,13 +2948,12 @@
                 }
                 if (doTrim) {
                     if (!isFirstBoot()) {
-                        if (mDexOptHelper.isDexOptDialogShown()) {
-                            try {
-                                ActivityManager.getService().showBootMessage(
-                                        mContext.getResources().getString(
-                                                R.string.android_upgrading_fstrim), true);
-                            } catch (RemoteException e) {
-                            }
+                        try {
+                            ActivityManager.getService().showBootMessage(
+                                    mContext.getResources().getString(
+                                            R.string.android_upgrading_fstrim),
+                                    true);
+                        } catch (RemoteException e) {
                         }
                     }
                     sm.runMaintenance();
@@ -7495,10 +7488,6 @@
         return mPlatformPackage;
     }
 
-    boolean isPreNUpgrade() {
-        return mIsPreNUpgrade;
-    }
-
     boolean isPreNMR1Upgrade() {
         return mIsPreNMR1Upgrade;
     }
diff --git a/services/core/java/com/android/server/pm/PackageManagerServiceTestParams.java b/services/core/java/com/android/server/pm/PackageManagerServiceTestParams.java
index 08ff51d..e5cfa67 100644
--- a/services/core/java/com/android/server/pm/PackageManagerServiceTestParams.java
+++ b/services/core/java/com/android/server/pm/PackageManagerServiceTestParams.java
@@ -63,7 +63,6 @@
     public InstantAppResolverConnection instantAppResolverConnection;
     public ComponentName instantAppResolverSettingsComponent;
     public boolean isPreNmr1Upgrade;
-    public boolean isPreNupgrade;
     public boolean isPreQupgrade;
     public boolean isUpgrade;
     public LegacyPermissionManagerInternal legacyPermissionManagerInternal;