Remove @hide ACTION_SHOW_INPUT_METHOD_PICKER

All references to
android.provider.Settings.ACTION_SHOW_INPUT_METHOD_PICKER have been
removed by the following CLs.

 Id36c8c34159bea8b72557b40bcf024d401f580b6 frameworks/base
 Id990c66516c9b3ed7ada6891746ec0e0eecbe545 packages/apps/Settings
 I915231678b94f97c1b5105cb607d6631e3df6b6a vendor/google_clockworks
 I3e26ed807445725262485ac1065fdfa299d1b624 cts

Test: make checkbuild
Fixes: 64008672
Bug: 6364455
Change-Id: I4210a5b5662be497d395a454f7f1cc395637683e
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index 53c82e6..dc9a26e 100755
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -576,21 +576,6 @@
             "android.settings.INPUT_METHOD_SUBTYPE_SETTINGS";
 
     /**
-     * Activity Action: Show a dialog to select input method.
-     * <p>
-     * In some cases, a matching Activity may not exist, so ensure you
-     * safeguard against this.
-     * <p>
-     * Input: Nothing.
-     * <p>
-     * Output: Nothing.
-     * @hide
-     */
-    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
-    public static final String ACTION_SHOW_INPUT_METHOD_PICKER =
-            "android.settings.SHOW_INPUT_METHOD_PICKER";
-
-    /**
      * Activity Action: Show settings to manage the user input dictionary.
      * <p>
      * Starting with {@link android.os.Build.VERSION_CODES#KITKAT},