BUG(): remove leading underscore of the format string

BUG() is not end-user facing but programmer facing, and we do not
use _("...") in them. Replace all `BUG(_("..."))` with `BUG("...")`

Signed-off-by: Lidong Yan <502024330056@smail.nju.edu.cn>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: brandb97

builtin/mktag.c

@@ -41,7 +41,7 @@ static int mktag_fsck_error_func(struct fsck_options *o UNUSED,
 		fprintf_ln(stderr, _("error: tag input does not pass fsck: %s"), message);
 		return 1;
 	default:
-		BUG(_("%d (FSCK_IGNORE?) should never trigger this callback"),
+		BUG("%d (FSCK_IGNORE?) should never trigger this callback",
 		    msg_type);
 	}
 }

builtin/worktree.c

@@ -621,7 +621,7 @@ static void print_preparing_worktree_line(int detach,
 		else {
 			struct commit *commit = lookup_commit_reference_by_name(branch);
 			if (!commit)
-				BUG(_("unreachable: invalid reference: %s"), branch);
+				BUG("unreachable: invalid reference: %s", branch);
 			fprintf_ln(stderr, _("Preparing worktree (detached HEAD %s)"),
 				  repo_find_unique_abbrev(the_repository, &commit->object.oid, DEFAULT_ABBREV));
 		}

pack-bitmap-write.c

@@ -1054,7 +1054,7 @@ void bitmap_writer_finish(struct bitmap_writer *writer,
 					 oid_access);
 
 		if (commit_pos < 0)
-			BUG(_("trying to write commit not in index"));
+			BUG("trying to write commit not in index");
 		stored->commit_pos = commit_pos;
 	}