Remove multi-tap feature

Change-Id: Ife44b3f9d420d77d2cfb51044a8356f02ed63e8b
diff --git a/java/proguard.flags b/java/proguard.flags
index 2023075..9096855 100644
--- a/java/proguard.flags
+++ b/java/proguard.flags
@@ -12,4 +12,5 @@
   void setDatabaseMax(int);
   void setDatabaseDelete(int);
   void waitUntilUpdateDBDone();
+  void waitForDictionaryLoading();
 }