wireless:mac80211: kill unuse macro MESH_CFG_CMP_LEN in mesh.h

Commit 00d3f14c has removed the references of this macro,
but left it only. So remove this definition.

commit 00d3f14c
Author: Johannes Berg <johannes@sipsolutions.net>
Date:   Tue Feb 10 21:26:00 2009 +0100

    mac80211: use cfg80211s BSS infrastructure

    Remove all the code from mac80211 to keep track of BSSes
    and use the cfg80211-provided code completely.
Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/mac80211/mesh.h

@@ -164,17 +164,6 @@ struct mesh_rmc {
 };
 
 
-/*
- * MESH_CFG_COMP_LEN Includes:
- * 	- Active path selection protocol ID.
- * 	- Active path selection metric ID.
- * 	- Congestion control mode identifier.
- * 	- Channel precedence.
- * Does not include mesh capabilities, which may vary across nodes in the same
- * mesh
- */
-#define MESH_CFG_CMP_LEN 	(IEEE80211_MESH_CONFIG_LEN - 2)
-
 #define MESH_DEFAULT_BEACON_INTERVAL		1000 	/* in 1024 us units */
 
 #define MESH_PATH_EXPIRE (600 * HZ)