frameworks/base: remove some duplicate ringtones/notification sounds

PS2: Start mk file cleanup
PS3: Remove empty mk files
PS4: Remove more dupes and unused audio

Change-Id: I7a091218e41b3cf7eea9738d9ea569d9cb3ee91d
Merge "frameworks/base: remove some duplicate ringtones/notification sounds" into kitkat
Fix NPE in ConnectivityService

Could occur when requestRouteToHostAddress is called on a network
with no associated tracker.  Code later in the method handles
this case gracefully but code introduced in JB throws an exception.

Change-Id: I6c8a0e313ecbcca120aeb5dd0802a72114749aa1
Merge branch 'kitkat' of https://github.com/AOKP/frameworks_base into kitkat