Remove c-11 memcpy checks from perf-critical code

Change-Id: Id4f37f5d4a03160572954a416efa1ef9b3d79ad1
Signed-off-by: Dave Barach <dave@barachs.net>
diff --git a/src/vnet/devices/pipe/pipe.c b/src/vnet/devices/pipe/pipe.c
index f45c088..c6d3f65 100644
--- a/src/vnet/devices/pipe/pipe.c
+++ b/src/vnet/devices/pipe/pipe.c
@@ -148,7 +148,7 @@
 
       n_copy = clib_min (n_left_from, n_left_to_next);
 
-      clib_memcpy (to_next, from, n_copy * sizeof (from[0]));
+      clib_memcpy_fast (to_next, from, n_copy * sizeof (from[0]));
       n_left_to_next -= n_copy;
       n_left_from -= n_copy;
       i = 0;