Revert "InputMethodService: Fix ignore case in showInputMethodPickerFromClient"

This reverts commit f2e67a5779.

bug: 2914259
open source change: https://review.source.android.com/#change,16419
Change-Id: I39df188a52ad9566aa523ce31f696886d4cdb980

services/java/com/android/server/InputMethodManagerService.java

@@ -1220,7 +1220,6 @@ public class InputMethodManagerService extends IInputMethodManager.Stub
             if (mCurClient == null || client == null
                     || mCurClient.client.asBinder() != client.asBinder()) {
                 Slog.w(TAG, "Ignoring showInputMethodDialogFromClient of: " + client);
-                return;
             }
 
             mHandler.sendEmptyMessage(MSG_SHOW_IM_PICKER);