Revert "FM Radio: avoid deadlock when disabling RDS"

This reverts commit 76350338466af05b1f75b5c3a92dd119c6d819d9.
Revert "FM Radio: do not try to change thread priority"

This reverts commit f9a8162880af6f185ed6e366171097f84dd7724b.
Revert "FM Radio: Add support for FM Radio in Android"

This reverts commit 159909373d406b0328a2b64c1ee10094828f79bb.