Do not include group updates in message search results.

app/src/main/java/org/thoughtcrime/securesms/database/SearchDatabase.java

@@ -83,7 +83,7 @@ public class SearchDatabase extends Database {
       "FROM " + MmsDatabase.TABLE_NAME + " " +
       "INNER JOIN " + MMS_FTS_TABLE_NAME + " ON " + MMS_FTS_TABLE_NAME + "." + ID + " = " + MmsDatabase.TABLE_NAME + "." + MmsDatabase.ID + " " +
       "INNER JOIN " + ThreadDatabase.TABLE_NAME + " ON " + MMS_FTS_TABLE_NAME + "." + THREAD_ID + " = " + ThreadDatabase.TABLE_NAME + "." + ThreadDatabase.ID + " " +
-      "WHERE " + MMS_FTS_TABLE_NAME + " MATCH ? " +
+      "WHERE " + MMS_FTS_TABLE_NAME + " MATCH ? AND " + MmsDatabase.TABLE_NAME + "." + MmsDatabase.MESSAGE_BOX + " & " + MmsSmsColumns.Types.GROUP_V2_BIT + " = 0 " +
       "ORDER BY " + MmsSmsColumns.NORMALIZED_DATE_RECEIVED + " DESC " +
       "LIMIT 500";