native-darwin-cctools-wrapper: kill it

Nothing uses it anymore

pkgs/build-support/native-darwin-cctools-wrapper/builder.sh

@@ -1,16 +0,0 @@
-source $stdenv/setup
-
-mkdir -p $out/bin
-for i in $binaries
-do 
-    ln -s "/usr/bin/$i" "$out/bin/"
-done
-
-# MIG assumes the standard Darwin core utilities (e.g., `rm -d'), so
-# let it see the impure directories.
-cat > "$out/bin/mig" <<EOF
-#!/bin/sh
-export PATH="/usr/bin:/bin:\$PATH"
-exec /usr/bin/mig "\$@"
-EOF
-chmod +x "$out/bin/mig"

pkgs/build-support/native-darwin-cctools-wrapper/default.nix

@@ -1,15 +0,0 @@
-{stdenv}:
-
-stdenv.mkDerivation {
-  name = "native-darwin-cctools-wrapper";
-
-  # Standard binaries normally found under /usr/bin (MIG is omitted here, and
-  # handled specially in ./builder.sh).
-  binaries =
-    [ "ar" "as" "c++filt" "gprof" "ld" "nm" "nmedit" "ranlib"
-      "size" "strings" "strip" "dsymutil" "libtool" "lipo"
-      "install_name_tool" "arch" "sw_vers"
-    ];
-
-  builder = ./builder.sh;
-}