Health: Remove non fixed-read-only replace_body_sensors flag

Since we decided to use is-fixed-read-only flag, in this CL we deprecate the old flag.

Bug: 364638912
Flag: android.permission.flags.replace_body_sensor_permission_enabled
Change-Id: I1a75ecacb6b7f0fbe8b62b240efdacdaf69c4525