Remove clearEncryptionPassword() from LockPatternUtils am: 0a9389d296 am: a8daebb9d0

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2016258

Change-Id: I8829b879fdd22f5a029a269d17113928df4f4827

core/java/com/android/internal/widget/LockPatternUtils.java

@@ -762,17 +762,6 @@ public class LockPatternUtils {
         return StorageManager.isFileEncryptedNativeOrEmulated();
     }
 
-    /**
-     * Clears the encryption password.
-     */
-    public void clearEncryptionPassword() {
-        try {
-            getLockSettings().updateEncryptionPassword(StorageManager.CRYPT_TYPE_DEFAULT, null);
-        } catch (RemoteException e) {
-            Log.e(TAG, "Couldn't clear encryption password");
-        }
-    }
-
     /**
      * Retrieves the quality mode for {@code userHandle}.
      * @see DevicePolicyManager#getPasswordQuality(android.content.ComponentName)