core: remove unneded headers for net cgroup controllers.

commit 3ed80a62 (cgroup: drop module support) made including
module.h redundant in the net cgroup controllers,
netclassid_cgroup.c and netprio_cgroup.c. This patch
removes them.
Signed-off-by: NRami Rosen <rami.rosen@intel.com>
Acked-by: NTejun Heo <tj@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/core/netclassid_cgroup.c

@@ -9,7 +9,6 @@
  * Authors:	Thomas Graf <tgraf@suug.ch>
  */
 
-#include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/cgroup.h>
 #include <linux/fdtable.h>

net/core/netprio_cgroup.c

@@ -11,7 +11,6 @@
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
-#include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/types.h>
 #include <linux/string.h>