Remove outdated stableId pattern from ConversationAdapter.

Author: alex-signal

app/src/main/java/org/thoughtcrime/securesms/conversation/ConversationAdapter.java

@@ -102,9 +102,6 @@ public class ConversationAdapter
 
   private static final int PAYLOAD_TIMESTAMP = 0;
 
-  private static final long HEADER_ID = Long.MIN_VALUE;
-  private static final long FOOTER_ID = Long.MIN_VALUE + 1;
-
   private final ItemClickListener clickListener;
   private final Context           context;
   private final LifecycleOwner    lifecycleOwner;
@@ -163,8 +160,6 @@ public boolean areContentsTheSame(@NonNull ConversationMessage oldItem, @NonNull
     this.hasWallpaper                 = recipient.hasWallpaper();
     this.isMessageRequestAccepted     = true;
     this.colorizer                    = colorizer;
-
-    setHasStableIds(true);
   }
 
   @Override
@@ -191,25 +186,6 @@ public int getItemViewType(int position) {
     }
   }
 
-  @Override
-  public long getItemId(int position) {
-    if (hasHeader() && position == 0) {
-      return HEADER_ID;
-    }
-
-    if (hasFooter() && position == getItemCount() - 1) {
-      return FOOTER_ID;
-    }
-
-    ConversationMessage message = getItem(position);
-
-    if (message == null) {
-      return -1;
-    }
-
-    return message.getUniqueId(digest);
-  }
-
   @SuppressLint("ClickableViewAccessibility")
   @Override
   public @NonNull RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {