sepolicy: removed usage of "system_writes_vendor_properties_violators"

As part of security hardening we are removing  violator
"system_writes_vendor_properties_violatots" from following
domains

  bootanim.te
  surfaceflinger.te
  zygote.te

Change-Id: I8e8c1293c24ef3222554f5e4998ea33e0aee4f7c