Simplify cgroups.json

cgroups.json causes the following changes to be applied twice to
/sys/fs/cgroup: change user ID to system, change group ID to system and
change mode to 0755. Apply these settings once instead of twice.

Bug: 213617178
Test: Ran ls -ld /sys/fs/cgroup in Cuttlefish.
Change-Id: Ieb953c186c027b989599cbbaa70a9c9324678cdf
Signed-off-by: Bart Van Assche <bvanassche@google.com>
diff --git a/libprocessgroup/profiles/cgroups.json b/libprocessgroup/profiles/cgroups.json
index 0634220..1c833d8 100644
--- a/libprocessgroup/profiles/cgroups.json
+++ b/libprocessgroup/profiles/cgroups.json
@@ -38,10 +38,7 @@
     "Controllers": [
       {
         "Controller": "freezer",
-        "Path": ".",
-        "Mode": "0755",
-        "UID": "system",
-        "GID": "system"
+        "Path": "."
       }
     ]
   }