selftests/tc-testing: Remove configs that no longer exist

Some qdiscs and classifiers have recently been retired from kernel.
However, tc-testing config is still cluttered with them which causes noise
when using merge_config.sh script to update existing config for tc-testing
compatibility. Remove the config settings for affected qdiscs and
classifiers.

Fixes: fb38306c ("net/sched: Retire ATM qdisc")
Fixes: 051d4420 ("net/sched: Retire CBQ qdisc")
Fixes: bbe77c14 ("net/sched: Retire dsmark qdisc")
Fixes: 265b4da8 ("net/sched: Retire rsvp classifier")
Fixes: 8c710f75 ("net/sched: Retire tcindex classifier")
Signed-off-by: Vlad Buslov <vladbu@nvidia.com>
Reviewed-by: Pedro Tammela <pctammela@mojatatu.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

tools/testing/selftests/tc-testing/config

@@ -13,14 +13,11 @@ CONFIG_NET_SCHED=y
 #
 # Queueing/Scheduling
 #
-CONFIG_NET_SCH_ATM=m
 CONFIG_NET_SCH_CAKE=m
-CONFIG_NET_SCH_CBQ=m
 CONFIG_NET_SCH_CBS=m
 CONFIG_NET_SCH_CHOKE=m
 CONFIG_NET_SCH_CODEL=m
 CONFIG_NET_SCH_DRR=m
-CONFIG_NET_SCH_DSMARK=m
 CONFIG_NET_SCH_ETF=m
 CONFIG_NET_SCH_FQ=m
 CONFIG_NET_SCH_FQ_CODEL=m
@@ -58,8 +55,6 @@ CONFIG_NET_CLS_FLOW=m
 CONFIG_NET_CLS_FLOWER=m
 CONFIG_NET_CLS_MATCHALL=m
 CONFIG_NET_CLS_ROUTE4=m
-CONFIG_NET_CLS_RSVP=m
-CONFIG_NET_CLS_TCINDEX=m
 CONFIG_NET_EMATCH=y
 CONFIG_NET_EMATCH_STACK=32
 CONFIG_NET_EMATCH_CMP=m