Minimal fix for stuck google now.

Bug:7500409
Change-Id: I1570d72e08fbe520ac07eed2ee40b6571fa1fe3c

Author: John Spurlock

packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java

@@ -680,6 +680,7 @@ protected void updateSearchPanel() {
     @Override
     public void showSearchPanel() {
         super.showSearchPanel();
+        mHandler.removeCallbacks(mShowSearchPanel);
 
         // we want to freeze the sysui state wherever it is
         mSearchPanelView.setSystemUiVisibility(mSystemUiVisibility);