Revert part of 1abf0950 (git-add: adjust to the get_pathspec() changes)

When get_pathspec() was originally made absolute-path capable,
we botched the interface to it, without dying inside the function
when given a path that is outside the work tree, and made it the
responsibility of callers to check the condition in a roundabout
way.  This is made unnecessary with the previous patch.
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

builtin-add.c

@@ -228,18 +228,6 @@ int cmd_add(int argc, const char **argv, const char *prefix)
 		goto finish;
 	}
 
-	if (*argv) {
-		/* Was there an invalid path? */
-		if (pathspec) {
-			int num;
-			for (num = 0; pathspec[num]; num++)
-				; /* just counting */
-			if (argc != num)
-				exit(1); /* error message already given */
-		} else
-			exit(1); /* error message already given */
-	}
-
 	fill_directory(&dir, pathspec, ignored_too);
 
 	if (show_only) {