drop untrusted_app exec_type getattr

SafetyNet is in the priv_app domain. Suppressing this
isn't necessary anymore.

Change-Id: Icbcb75d3b2ebde657bd16b336b252aaec4d0d252

untrusted_app.te

@@ -84,10 +84,6 @@ userdebug_or_eng(`
 # gdbserver for ndk-gdb ptrace attaches to app process.
 allow untrusted_app self:process ptrace;
 
-# Programs routinely attempt to scan through /system, looking
-# for files. Suppress the denials when they occur.
-dontaudit untrusted_app exec_type:file getattr;
-
 # TODO: switch to meminfo service
 allow untrusted_app proc_meminfo:file r_file_perms;