Revert "Add the FLAG_IMMUTABLE flag for creating a PendingIntent"

This reverts commit 334968c113.

Reason for revert: Bug: 170280415

Change-Id: Idaa269406d6c1609c75f0dfba1f7fa9daf979101

src/com/android/settings/location/LocationSlice.java

@@ -96,6 +96,6 @@ public class LocationSlice implements CustomSliceable {
     private PendingIntent getPrimaryAction() {
         final Intent intent = getIntent();
         return PendingIntent.getActivity(mContext, 0 /* requestCode */,
-                intent, PendingIntent.FLAG_IMMUTABLE);
+                intent, 0 /* flags */);
     }
 }