glibc: Simplify derivation further

No native hashes should be changed with this commit
default.nix's cross hash should also not be changed

pkgs/development/libraries/glibc/info.nix

@@ -1,13 +1,8 @@
-{ lib, stdenv, fetchurl, texinfo, perl }:
+{ callPackage, texinfo, perl }:
 
-let build = import ./common.nix; in
-
-/* null cross builder */
-build null {
+callPackage ./common.nix {} {
   name = "glibc-info";
 
-  inherit fetchurl stdenv lib;
-
   outputs = [ "out" ];
 
   configureFlags = [ "--enable-add-ons" ];