Revert "allow time rw access to /dev/diag"

After discussion with Geremy and Dan, we want to spend some time and see if we can get time to stop using /dev/diag.

Reverting for now

This reverts commit 1ba185cd4eb1db56d50019da1e6b0ba1fc5d9cad.

Change-Id: If32c934c42b664c5447dc91ba391ae70db50be92
diff --git a/sepolicy/time.te b/sepolicy/time.te
index 1881e14..a1522c8 100644
--- a/sepolicy/time.te
+++ b/sepolicy/time.te
@@ -9,7 +9,6 @@
 
 allow time time_data_file:dir rw_dir_perms;
 allow time time_data_file:file create_file_perms;
-allow time diag_device:chr_file rw_file_perms;
 
 allow time shared_log_device:chr_file rw_file_perms;
 allow time alarm_device:chr_file rw_file_perms;