Revert "fix symlink error"

This reverts commit e766b0350ab68425b09680034073ae976cd79c8b.
Revert "ril: Ignore unsupported IMS state request"

This reverts commit 584be887eb359e5714633c19e26e2b68f11f073b.
Revert "lower handset volume a little bit"

This reverts commit a905b156157446f6966ecbdb99ed8b496fd26deb.
Revert "Add missing audio symlink"

This reverts commit 4dc0fa2c718d9aff2f5a84e9ef75ab4b5b1ef311.