Remove useImsAlwaysForEmergencyCall, it has been moved to CarrierConfig

This was set to false on mnc-dr-dev as a temporary fix. However that
does not work on master since it has been moved to CarrierConfig.
Removing this for now to fix the build. If we decide to keep it as a 
permanent fix/workaround, will need to add it in CarrierConfig overlay 
on master.

Bug: 24499450

Change-Id: I496926f49fdd1f402c19efefcaa43e451b59a767
diff --git a/overlay/frameworks/base/core/res/res/values-mcc214-mnc21/config.xml b/overlay/frameworks/base/core/res/res/values-mcc214-mnc21/config.xml
deleted file mode 100644
index a225d1c..0000000
--- a/overlay/frameworks/base/core/res/res/values-mcc214-mnc21/config.xml
+++ /dev/null
@@ -1,24 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-/*
-** Copyright 2015, The Android Open Source Project
-**
-** 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.
-*/
--->
-
-<resources>
-    <!-- Do not flag indicating emergency calls will always use IMS irrespective of the state of
-         the IMS connection -->
-    <bool name="useImsAlwaysForEmergencyCall">false</bool>
-</resources>