Removing unneeded excludes in source jar building config.

Originally added in ag/799192 we had classess from android.content.pm.*
and android.service.media.* for v4 media code. Due to that we needed to exclude
these classes from being included in sources jars. In ag/839061 these files
got removed, but they did not clean up these exclusion filters in gradle files.

Test: None
Bug: 33845666
Change-Id: I583bc6d6d5d6b94338eda79df79ff9d3ffb19434
5 files changed