test: remove obsolete WASI test

test-wasi-binding.js was added during the initial WASI development, but it is now considered obsolete. It also does not provide any additional test coverage. This commit removes it. PR-URL: #30980 Reviewed-By: David Carlier <[email protected]> Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Rich Trott <[email protected]>

Author: cjihrig