Remove system/bin/clatd from clatd_exec

Since clatd is shipped by mainline module, remove the following privs
/system/bin/clatd      u:object_r:clatd_exec:s0

Test: build
Change-Id: Id98470fc5e641acc7e5635af02a520d2ed531cd8
diff --git a/private/file_contexts b/private/file_contexts
index f70c972..784bc6d 100644
--- a/private/file_contexts
+++ b/private/file_contexts
@@ -296,7 +296,6 @@
 /system/bin/racoon	u:object_r:racoon_exec:s0
 /system/xbin/su		u:object_r:su_exec:s0
 /system/bin/dnsmasq     u:object_r:dnsmasq_exec:s0
-/system/bin/clatd	u:object_r:clatd_exec:s0
 /system/bin/linker(64)? u:object_r:system_linker_exec:s0
 /system/bin/linkerconfig u:object_r:linkerconfig_exec:s0
 /system/bin/bootstrap/linker(64)? u:object_r:system_linker_exec:s0