Revert "Fix a type confusion bug in bta_av_setconfig_rej"

This reverts commit d5ec5273.

Reason for revert: b/281788858
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:97c9c472f6b63b86bdf9cfd054490051e881c013)
Merged-In: If6fb57064b5b2da40842e2c1cf95aadc6f0351b6
Change-Id: If6fb57064b5b2da40842e2c1cf95aadc6f0351b6