arch: xtensa: defconfig: Drop obsolete CONFIG_NET_CLS_TCINDEX

This option was removed from the Kconfig in commit
8c710f7 ("net/sched: Retire tcindex classifier") but it was not
removed from the defconfigs.

Fixes: 8c710f7 ("net/sched: Retire tcindex classifier")
Signed-off-by: Johan Korsnes <johan.korsnes@gmail.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Message-Id: <20250323191004.112743-1-johan.korsnes@gmail.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

Author: johankor

arch/xtensa/configs/common_defconfig

@@ -32,7 +32,6 @@ CONFIG_NET_SCH_TEQL=m
 CONFIG_NET_SCH_TBF=m
 CONFIG_NET_SCH_GRED=m
 CONFIG_NET_SCH_DSMARK=m
-CONFIG_NET_CLS_TCINDEX=m
 CONFIG_NET_CLS_ROUTE4=m
 CONFIG_NET_CLS_FW=m
 CONFIG_NET_CLS_U32=m