object-file: remove OBJECT_INFO_IGNORE_LOOSE

Its last user was removed in 97b2fa0 (fetch-pack: drop
custom loose object cache, 2018-11-12), so we can remove it.

Helped-by: Jeff King <[email protected]>
Signed-off-by: Jonathan Tan <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: jonathantanmy

object-file.c

@@ -1575,9 +1575,6 @@ static int do_oid_object_info_extended(struct repository *r,
 		if (find_pack_entry(r, real, &e))
 			break;
 
-		if (flags & OBJECT_INFO_IGNORE_LOOSE)
-			return -1;
-
 		/* Most likely it's a loose object. */
 		if (!loose_object_info(r, real, oi, flags))
 			return 0;

object-store.h

@@ -434,13 +434,11 @@ struct object_info {
 #define OBJECT_INFO_ALLOW_UNKNOWN_TYPE 2
 /* Do not retry packed storage after checking packed and loose storage */
 #define OBJECT_INFO_QUICK 8
-/* Do not check loose object */
-#define OBJECT_INFO_IGNORE_LOOSE 16
 /*
  * Do not attempt to fetch the object if missing (even if fetch_is_missing is
  * nonzero).
  */
-#define OBJECT_INFO_SKIP_FETCH_OBJECT 32
+#define OBJECT_INFO_SKIP_FETCH_OBJECT 16
 /*
  * This is meant for bulk prefetching of missing blobs in a partial
  * clone. Implies OBJECT_INFO_SKIP_FETCH_OBJECT and OBJECT_INFO_QUICK