Do not focus on OK button on deletion if last input not from keyboard.

Bug: 33664805
Bug: 33678561
Change-Id: I073011d7687a33c3c1cdc16da07b395dd64b09a8
diff --git a/src/com/android/documentsui/ui/DialogController.java b/src/com/android/documentsui/ui/DialogController.java
index c94a16f..852887e 100644
--- a/src/com/android/documentsui/ui/DialogController.java
+++ b/src/com/android/documentsui/ui/DialogController.java
@@ -104,7 +104,6 @@
                     (DialogInterface) -> {
                         Button positive = alertDialog.getButton(AlertDialog.BUTTON_POSITIVE);
                         positive.setFocusable(true);
-                        positive.setFocusableInTouchMode(true);
                         positive.requestFocus();
                     });
             alertDialog.show();