logd.te: Remove setting persist.sys. and sys.powerctl

As of system/core commit a742d1027784a54c535cff69b375a9f560893155, this
functionality is no longer used.

Test: device boots and no obvious problems.
Change-Id: Ia3ad8add92f1cdaaff36f4935be8b03458fed7f2

public/logd.te

@@ -22,10 +22,6 @@ userdebug_or_eng(`
 allow logd pstorefs:dir search;
 allow logd pstorefs:file r_file_perms;
 
-# Set persist.sys. and sys.powerctl
-set_prop(logd, safemode_prop)
-set_prop(logd, powerctl_prop)
-
 # Access device logging gating property
 get_prop(logd, device_logging_prop)
 userdebug_or_eng(`get_prop(logd, logpersistd_logging_prop)')