google-cloud-sdk: remove gsutil test

The command module references the tests, and since all command modules
get imported at startup, dbaafbbf73ef5aeb2fa7d5aea73bb32b9d78e4f3
turned it into a startup crash.

Unless you're actively hacking on gsutil, this command isn't much use,
so we're better off without it.

pkgs/tools/admin/google-cloud-sdk/default.nix

@@ -84,6 +84,7 @@ in stdenv.mkDerivation rec {
 
     # remove tests and test data
     find $out -name tests -type d -exec rm -rf '{}' +
+    rm $out/google-cloud-sdk/platform/gsutil/gslib/commands/test.py
 
     # compact all the JSON
     find $out -name \*.json | while read path; do