Remove R FCM HALs and older kernels

Android B framework drops support for old Android R Vendor Interface.
The R FCM is kept to handle the android11-5.4 kernel configurations
because there may be devices that still use the old kernel even if they
target a newer FCM.

Test: m && m check-vintf-all
Bug: 388074589
Change-Id: I14e03bf78017d5ba63adf4ec684d5973d5239b32