Remove BIND_ALLOW_BACKGROUND_ACTIVITY_STARTS for ConnectionService bind.

This was added in error as a way to grant InCallServices the ability to
start activities.  This binding code is ONLY used for ConnectionServices.

Test: Run Telecom CTS and unit test suite.
Fixes: 168211626
Change-Id: I75568a4b3827f1fc46f84972703ceed0cb7369be
diff --git a/src/com/android/server/telecom/ServiceBinder.java b/src/com/android/server/telecom/ServiceBinder.java
index c64fc73..a322a5e 100644
--- a/src/com/android/server/telecom/ServiceBinder.java
+++ b/src/com/android/server/telecom/ServiceBinder.java
@@ -87,8 +87,7 @@
                 ServiceConnection connection = new ServiceBinderConnection(call);
 
                 Log.addEvent(call, LogUtils.Events.BIND_CS, mComponentName);
-                final int bindingFlags = Context.BIND_AUTO_CREATE | Context.BIND_FOREGROUND_SERVICE
-                        | Context.BIND_ALLOW_BACKGROUND_ACTIVITY_STARTS;
+                final int bindingFlags = Context.BIND_AUTO_CREATE | Context.BIND_FOREGROUND_SERVICE;
                 final boolean isBound;
                 if (mUserHandle != null) {
                     isBound = mContext.bindServiceAsUser(serviceIntent, connection, bindingFlags,