s390/cio: idset.c: remove some unused functions

Removes some functions that are not used anywhere:
idset_clear() idset_sch_get_first()

This was partially found by using a static code analysis program called cppcheck.

Signed-off-by: Rickard Strandqvist <[e-mail]>
Signed-off-by: Heiko Carstens <[e-mail]>
Signed-off-by: Martin Schwidefsky <[e-mail]>

drivers/s390/cio/idset.c

···
 	vfree(set);
 }
 
-void idset_clear(struct idset *set)
-{
-	memset(set->bitmap, 0, bitmap_size(set->num_ssid, set->num_id));
-}
-
 void idset_fill(struct idset *set)
 {
 	memset(set->bitmap, 0xff, bitmap_size(set->num_ssid, set->num_id));
···
 int idset_sch_contains(struct idset *set, struct subchannel_id schid)
 {
 	return idset_contains(set, schid.ssid, schid.sch_no);
-}
-
-int idset_sch_get_first(struct idset *set, struct subchannel_id *schid)
-{
-	int ssid = 0;
-	int id = 0;
-	int rc;
-
-	rc = idset_get_first(set, &ssid, &id);
-	if (rc) {
-		init_subchannel_id(schid);
-		schid->ssid = ssid;
-		schid->sch_no = id;
-	}
-	return rc;
 }
 
 int idset_is_empty(struct idset *set)

drivers/s390/cio/idset.h

···
 struct idset;
 
 void idset_free(struct idset *set);
-void idset_clear(struct idset *set);
 void idset_fill(struct idset *set);
 
 struct idset *idset_sch_new(void);
···
 void idset_sch_del(struct idset *set, struct subchannel_id id);
 void idset_sch_del_subseq(struct idset *set, struct subchannel_id schid);
 int idset_sch_contains(struct idset *set, struct subchannel_id id);
-int idset_sch_get_first(struct idset *set, struct subchannel_id *id);
 int idset_is_empty(struct idset *set);
 void idset_add_set(struct idset *to, struct idset *from);