Remove obsolete comment

Change-Id: I9e606fd573a60d12482b12e0e9adaecd552f66a7
diff --git a/java/src/com/android/inputmethod/keyboard/PointerTracker.java b/java/src/com/android/inputmethod/keyboard/PointerTracker.java
index 7b7dd7b..9764cb3 100644
--- a/java/src/com/android/inputmethod/keyboard/PointerTracker.java
+++ b/java/src/com/android/inputmethod/keyboard/PointerTracker.java
@@ -387,7 +387,6 @@
             return;
         }
 
-        // Even if the key is disabled, update the key release graphics just in case.
         sDrawingProxy.onKeyReleased(key, withAnimation);
 
         if (key.isShift()) {