Revert "Enforce FIB table creation before use"

This reverts commit f9342023c19887da656133e2688a90d70383b0c5.

Reverting to unblock master. No idea why jjb +1ed this patch! On closer inspection it looks like it -1ed it and subsequently changed opinion. CSIT tests should be fixed before re-merging. 

Change-Id: I26608912a962c52083073e16c7c9d2cc44a3cc8d
Signed-off-by: Florin Coras <fcoras@cisco.com>
diff --git a/src/vnet/mfib/mfib_table.h b/src/vnet/mfib/mfib_table.h
index 4c1077f..6a58102 100644
--- a/src/vnet/mfib/mfib_table.h
+++ b/src/vnet/mfib/mfib_table.h
@@ -347,6 +347,7 @@
                                                      mfib_source_t source,
                                                      const u8 *name);
 
+
 /**
  * @brief
  * Take a reference counting lock on the table