misc: drop unneeded scripts

[branchvincent]

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These won't be needed after Homebrew/brew#17773 rewrites node shebangs automatically

[alebcay]

Note that for bcoin, grammarly-languageserver, and mongosh, the package installation is happening in libexec, so removing the script is causing bin to be empty/missing the executable file entirely.

[branchvincent]

Ah good catch, thanks :) should have looked closer

[github-actions]

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