bridge: remove mode BRIDGE_MODE_SWDEV

This patch removes bridge mode swdev.
Users can use BRIDGE_FLAGS_SELF to indicate swdev offload
if needed.
Signed-off-by: NRoopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: NScott Feldman <sfeldma@gmail.com>
Signed-off-by: NJiri Pirko <jiri@resnulli.us>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/uapi/linux/if_bridge.h

@@ -105,7 +105,6 @@ struct __fdb_entry {
 
 #define BRIDGE_MODE_VEB		0	/* Default loopback mode */
 #define BRIDGE_MODE_VEPA	1	/* 802.1Qbg defined VEPA mode */
-#define BRIDGE_MODE_SWDEV	2	/* Full switch device offload */
 #define BRIDGE_MODE_UNDEF	0xFFFF  /* mode undefined */
 
 /* Bridge management nested attributes