fix(builtin): remove unnecessary loader script

[kormide]

PR Checklist

Please check if your PR fulfills the following requirements:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature (please, look at the "Scope of the project" section in the README.md file)
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Other... Please describe:

What is the current behavior?

This is a reincarnation of #3493, and related to #3277.

ESM scripts couldn't be used with nodejs_binary when --nobazel_run_linker was set. This is because the loader script is always a .cjs file and fails when it tries to load an mjs entrypoint.

What is the new behavior?

Remove the loader script as it no longer seems to be necessary.

Note that loading third-party dependencies in an esm script when the linker is disabled does not work as our require patch only applies to the cjs loader and not the mjs loader. However this change still provides incremental benefit as you can run an mjs script with no dependencies.

A solution that people can use to load third-party deps is to provide a custom loader using node's --loader option.

Does this PR introduce a breaking change?

• Yes
• No

[gregmagolan]

🌮

[kormide]

The test failure is caused by this bug in rules_sass: bazelbuild/rules_sass#142

[kormide]

Added a patch for rules_sass. The tests on buildkite are passing now.