Make flags UI available on release build of launcher

The UI will only be shown on eng/userdebug platform builds.

Bug: 117223984
Change-Id: I27843f2d856a4a19f3fe53c4d306606eaa5714a2
diff --git a/src/com/android/launcher3/LauncherProvider.java b/src/com/android/launcher3/LauncherProvider.java
index a423a90..7d62ada 100644
--- a/src/com/android/launcher3/LauncherProvider.java
+++ b/src/com/android/launcher3/LauncherProvider.java
@@ -70,9 +70,6 @@
 import java.net.URISyntaxException;
 import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.Collections;
-import java.util.HashSet;
-import java.util.LinkedHashSet;
 
 public class LauncherProvider extends ContentProvider {
     private static final String TAG = "LauncherProvider";
@@ -793,7 +790,7 @@
                     convertShortcutsToLauncherActivities(db);
                 case 26:
                     // QSB was moved to the grid. Clear the first row on screen 0.
-                    if (FeatureFlags.getInstance(mContext).isQsbOnFirstScreenEnabled() &&
+                    if (FeatureFlags.QSB_ON_FIRST_SCREEN.get() &&
                             !LauncherDbUtils.prepareScreenZeroToHostQsb(mContext, db)) {
                         break;
                     }