tree-sitter: remove wasm libs

[p-linnane]

• Have you followed the guidelines for contributing?
• Have you ensured that your commits follow the commit style guide?
• Have you checked that there aren't other open pull requests for the same formula update/change?
• Have you built your formula locally with HOMEBREW_NO_INSTALL_FROM_API=1 brew install --build-from-source <formula>, where <formula> is the name of the formula you're submitting?
• Is your test running fine brew test <formula>, where <formula> is the name of the formula you're submitting?
• Does your build pass brew audit --strict <formula> (after doing HOMEBREW_NO_INSTALL_FROM_API=1 brew install --build-from-source <formula>)? If this is a new formula, does it pass brew audit --new <formula>?

---

Building wasm libs requires a specific version of emscripten. No other major packager ships wasm libraries, so this PR removes them so tree-sitter can build successfully again.

Closes #158998

[github-actions]

🤖 An automated task has requested bottles to be published to this PR.

[MikeMcQuaid]

Makes sense to me, thanks @p-linnane!