packfile: drop packfile_store_get_packs()

In the preceding commits we have removed all remaining callers of
`packfile_store_get_packs()`, the function is thus unused now. Remove
it.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: pks-t

packfile.c

@@ -1027,12 +1027,6 @@ void packfile_store_reprepare(struct packfile_store *store)
 	packfile_store_prepare(store);
 }
 
-struct packed_git *packfile_store_get_packs(struct packfile_store *store)
-{
-	packfile_store_prepare(store);
-	return store->packs;
-}
-
 struct packed_git *packfile_store_get_all_packs(struct packfile_store *store)
 {
 	packfile_store_prepare(store);

packfile.h

@@ -136,12 +136,6 @@ void packfile_store_reprepare(struct packfile_store *store);
 void packfile_store_add_pack(struct packfile_store *store,
 			     struct packed_git *pack);
 
-/*
- * Get packs managed by the given store. Does not load the MIDX or any packs
- * referenced by it.
- */
-struct packed_git *packfile_store_get_packs(struct packfile_store *store);
-
 /*
  * Get all packs managed by the given store, including packfiles that are
  * referenced by multi-pack indices.