drop "allow healthd self:process execmem;"

The execmem capability indicates that the processes creates anonymous
executable memory, which is most commonly used for JITing functionality.
All of the healthd executable code comes from the filesystem, and
healthd does not rely on JITing or loading code from non-file based
sources, so this permission is unnecessary.

Bug: 32659667
Test: compiles and boots
Change-Id: Ifb2b68625b191cb002dbb134cace6ddd215236e8
1 file changed