Revert "Audio and video bitrate are now configurable through system properties"

This reverts commit 44b59fd9326026d3f82dec25cde48c589b0438e7.

Conflicts:
	media/libstagefright/wifi-display/source/Converter.cpp

Change-Id: Id5b0e26e258bb1ea9b766a1fe7b4dca5fb382ddf
Fixed some more revert issues

Change-Id: I3a233a770beecaa49ac19278d394ba07d0c31c38