staging: lustre: ptlrpc: sec_gc: Remove useless cast on void pointer

The semantic patch used to find this is:

@r@
expression x;
void* e;
type T;
identifier f;
@@

(
  *((T *)e)
|
  ((T *)x)[...]
|
  ((T *)x)->f
|
- (T *)
  e
)
Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/ptlrpc/sec_gc.c

@@ -146,7 +146,7 @@ static void sec_do_gc(struct ptlrpc_sec *sec)
 
 static int sec_gc_main(void *arg)
 {
-	struct ptlrpc_thread *thread = (struct ptlrpc_thread *) arg;
+	struct ptlrpc_thread *thread = arg;
 	struct l_wait_info lwi;
 
 	unshare_fs_struct();