Cleaned up the flag support_phone_uid_check_for_multiuser

The support_phone_uid_check_for_multiuser has reached nextfood. Cleaned
up the old code.

Bug: 328511085
Test: Basic telephony functionality tests
Flag: EXEMPT clean up
Change-Id: Idd6235f480dffe5292c5505d4a656a9388d95eb9
diff --git a/src/com/android/phone/PhoneInterfaceManager.java b/src/com/android/phone/PhoneInterfaceManager.java
index f337704..5ac898f 100644
--- a/src/com/android/phone/PhoneInterfaceManager.java
+++ b/src/com/android/phone/PhoneInterfaceManager.java
@@ -8159,31 +8159,15 @@
     @Override
     public void uploadCallComposerPicture(int subscriptionId, String callingPackage,
             String contentType, ParcelFileDescriptor fd, ResultReceiver callback) {
-        if (com.android.internal.telephony.flags.Flags.supportPhoneUidCheckForMultiuser()) {
-            enforceCallingPackage(callingPackage, Binder.getCallingUid(),
-                    "Invalid package:" + callingPackage);
-        } else {
-            try {
-                if (!Objects.equals(mApp.getPackageManager().getPackageUid(callingPackage, 0),
-                        Binder.getCallingUid())) {
-                    throw new SecurityException("Invalid package:" + callingPackage);
-                }
-            } catch (PackageManager.NameNotFoundException e) {
-                throw new SecurityException("Invalid package:" + callingPackage);
-            }
-        }
-
+        enforceCallingPackage(callingPackage, Binder.getCallingUid(),
+                "Invalid package:" + callingPackage);
         enforceTelephonyFeatureWithException(callingPackage,
                 PackageManager.FEATURE_TELEPHONY_CALLING, "uploadCallComposerPicture");
 
         RoleManager rm = mApp.getSystemService(RoleManager.class);
         List<String> dialerRoleHolders;
-        if (com.android.internal.telephony.flags.Flags.supportPhoneUidCheckForMultiuser()) {
-            dialerRoleHolders = rm.getRoleHoldersAsUser(RoleManager.ROLE_DIALER,
-                    UserHandle.of(ActivityManager.getCurrentUser()));
-        } else {
-            dialerRoleHolders = rm.getRoleHolders(RoleManager.ROLE_DIALER);
-        }
+        dialerRoleHolders = rm.getRoleHoldersAsUser(RoleManager.ROLE_DIALER,
+                UserHandle.of(ActivityManager.getCurrentUser()));
         if (!dialerRoleHolders.contains(callingPackage)) {
             throw new SecurityException("App must be the dialer role holder to"
                     + " upload a call composer pic");