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>
diff --git a/packfile.c b/packfile.c
index 5a7caec..db748b0 100644
--- a/packfile.c
+++ b/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);
diff --git a/packfile.h b/packfile.h
index e7a5792..3f38c63 100644
--- a/packfile.h
+++ b/packfile.h
@@ -137,12 +137,6 @@ 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.
  */