[PKT_SCHED]: act_api.c: kill some exports

init, destroy, dump etc. should be performed through Thomas's tcf_exts,
don't export the act_api.c functions to modules. tcf_action_dump_1
will follow once tcf_dump_walker is converted to callbacks.
Signed-off-by: Patrick McHardy <kaber@trash.net>

net/sched/act_api.c

@@ -883,11 +883,5 @@ subsys_initcall(tc_action_init);
 
 EXPORT_SYMBOL(tcf_register_action);
 EXPORT_SYMBOL(tcf_unregister_action);
-EXPORT_SYMBOL(tcf_action_init_1);
-EXPORT_SYMBOL(tcf_action_init);
-EXPORT_SYMBOL(tcf_action_destroy);
 EXPORT_SYMBOL(tcf_action_exec);
-EXPORT_SYMBOL(tcf_action_copy_stats);
-EXPORT_SYMBOL(tcf_action_dump);
 EXPORT_SYMBOL(tcf_action_dump_1);
-EXPORT_SYMBOL(tcf_action_dump_old);