Remove unused variable from PhoneWindowManager

This variable is always false. Remove it.

Bug: 163073386
Test: compile only
Change-Id: Ia45ba9628e255ecbf5710cbf1f1a7dfb9373d346
diff --git a/services/core/java/com/android/server/policy/PhoneWindowManager.java b/services/core/java/com/android/server/policy/PhoneWindowManager.java
index fa3bcb6..548cd70 100644
--- a/services/core/java/com/android/server/policy/PhoneWindowManager.java
+++ b/services/core/java/com/android/server/policy/PhoneWindowManager.java
@@ -450,7 +450,6 @@
     volatile int mPendingWakeKey = PENDING_KEY_NULL;
 
     int mRecentAppsHeldModifiers;
-    boolean mLanguageSwitchKeyPressed;
 
     int mCameraLensCoverState = CAMERA_LENS_COVER_ABSENT;
     boolean mHaveBuiltInKeyboard;
@@ -2938,12 +2937,6 @@
             mWindowManagerFuncs.switchKeyboardLayout(event.getDeviceId(), direction);
             return -1;
         }
-        if (mLanguageSwitchKeyPressed && !down
-                && (keyCode == KeyEvent.KEYCODE_LANGUAGE_SWITCH
-                        || keyCode == KeyEvent.KEYCODE_SPACE)) {
-            mLanguageSwitchKeyPressed = false;
-            return -1;
-        }
 
         if (isValidGlobalKey(keyCode)
                 && mGlobalKeyManager.handleGlobalKey(mContext, keyCode, event)) {