fib: Coverity fix to remove dead code

Type: fix

Change-Id: I678f523f058165030572d9cd395802b772db9ed7
Signed-off-by: Neale Ranns <nranns@cisco.com>
diff --git a/src/vnet/mfib/mfib_api.c b/src/vnet/mfib/mfib_api.c
index bcab83b..1066a9d 100644
--- a/src/vnet/mfib/mfib_api.c
+++ b/src/vnet/mfib/mfib_api.c
@@ -80,8 +80,6 @@
 {
     in = clib_net_to_host_u32(in);
 
-    if (in & MFIB_API_ITF_FLAG_NONE)
-        *out |= MFIB_ITF_FLAG_NONE;
     if (in & MFIB_API_ITF_FLAG_NEGATE_SIGNAL)
         *out |= MFIB_ITF_FLAG_NEGATE_SIGNAL;
     if (in & MFIB_API_ITF_FLAG_ACCEPT)