Reverts default-talkback-permissions.xml in gs-common

ag/16646190 has fulfilled the permission pregrant for TalkBack.
So we revert the old change.

Bug: 192521587
Test: manual test
Change-Id: I2f702597fbcafc361a7d383915433af4da735509
diff --git a/default-talkback-permissions.xml b/default-talkback-permissions.xml
deleted file mode 100644
index ca8b5dd..0000000
--- a/default-talkback-permissions.xml
+++ /dev/null
@@ -1,56 +0,0 @@
-<?xml version='1.0' encoding='utf-8' standalone='yes' ?>
-
-<!-- Copyright (C) 2021 Google Inc.
-
-    Licensed under the Apache License, Version 2.0 (the "License");
-    you may not use this file except in compliance with the License.
-    You may obtain a copy of the License at
-
-      http://www.apache.org/licenses/LICENSE-2.0
-
-    Unless required by applicable law or agreed to in writing, software
-    distributed under the License is distributed on an "AS IS" BASIS,
-    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-    See the License for the specific language governing permissions and
-    limitations under the License.
--->
-
-<!--
-    This file contains permissions to be granted by default. Default
-    permissions are granted to special platform components and to apps
-    that are approved to get default grants. The special components
-    are apps that are expected tto work out-of-the-box as they provide
-    core use cases such as default dialer, default email, etc. These
-    grants are managed by the platform. The apps that are additionally
-    approved for default grants are ones that provide carrier specific
-    functionality, ones legally required at some location, ones providing
-    alternative disclosure and opt-out UI, ones providing highlight features
-    of a dedicated device, etc. This file contains only the latter exceptions.
-    Fixed permissions cannot be controlled by the user and need a special
-    approval. Typically these are to ensure either legally mandated functions
-    or the app is considered a part of the OS.
--->
-
-<exceptions>
-
-    <!-- This is an example of an exception:
-    <exception
-        package="foo.bar.permission"
-      <permission name="android.permission.READ_CONTACTS" fixed="true"/>
-      <permission name="android.permission.READ_CALENDAR" fixed="false"/>
-    </exception>
-    -->
-
-    <exception package="com.google.android.marvin.talkback">
-        <!-- TalkBack: screen-reader for blind/low-vision users -->
-
-        <!-- Phone state to reduce feedback when user is in a phone call -->
-        <permission name="android.permission.READ_PHONE_STATE" fixed="false"/>
-        <!-- Facilitate BT-capable braille displays with these BLUETOOTH pregrants -->
-        <permission name="android.permission.BLUETOOTH_CONNECT" fixed="false"/>
-        <permission name="android.permission.BLUETOOTH_SCAN" fixed="false"/>
-        <permission name="android.permission.BLUETOOTH_ADVERTISE" fixed="false"/>
-    </exception>
-
-</exceptions>
-
diff --git a/device.mk b/device.mk
index d6a156c..80aae9f 100644
--- a/device.mk
+++ b/device.mk
@@ -14,8 +14,5 @@
 # limitations under the License.
 #
 
-PRODUCT_COPY_FILES += \
-	device/google/gs-common/default-talkback-permissions.xml:$(TARGET_COPY_OUT_PRODUCT)/etc/default-permissions/default-talkback-permissions.xml
-
 PRODUCT_SOONG_NAMESPACES += \
 	device/google/gs-common/powerstats