Fix Lint warnings

app/src/main/java/com/limelight/ui/AdapterFragmentCallbacks.java

@@ -3,6 +3,6 @@ package com.limelight.ui;
 import android.widget.AbsListView;
 
 public interface AdapterFragmentCallbacks {
-    public int getAdapterFragmentLayoutId();
-    public void receiveAbsListView(AbsListView gridView);
+    int getAdapterFragmentLayoutId();
+    void receiveAbsListView(AbsListView gridView);
 }

app/src/main/java/com/limelight/ui/GameGestures.java

@@ -1,5 +1,5 @@
 package com.limelight.ui;
 
 public interface GameGestures {
-    public void showKeyboard();
+    void showKeyboard();
 }