Revert "Add neverallows for debugfs access"

Revert submission 1668411

Reason for revert: Suspect for b/186173384
Reverted Changes:
Iaa4fce9f0:Check that tracefs files are labelled as tracefs_t...
I743a81489:Exclude vendor_modprobe from debugfs neverallow re...
I63a22402c:Add neverallows for debugfs access
I289f2d256:Add a neverallow for debugfs mounting

Change-Id: I9b7d43ac7e2ead2d175b265e97c749570c95e075
diff --git a/private/system_server.te b/private/system_server.te
index 136910e..d3478bd 100644
--- a/private/system_server.te
+++ b/private/system_server.te
@@ -186,9 +186,7 @@
 allow system_server stats_data_file:file unlink;
 
 # Read /sys/kernel/debug/wakeup_sources.
-no_debugfs_restriction(`
-  allow system_server debugfs_wakeup_sources:file r_file_perms;
-')
+allow system_server debugfs_wakeup_sources:file r_file_perms;
 
 # Read /sys/kernel/ion/*.
 allow system_server sysfs_ion:file r_file_perms;