Remove `preinstall` hook from package.json
Remove `preinstall` hook from package.json

The `preinstall` hook is problematic for users trying to `npm install
chrome-devtools-frontend`. For DevTools development, it’s not
directly needed since `npm run install-deps` is supposed to be used
instead of `npm install` anyway.

Therefore, this patch removes the `preinstall` hook.

Bug: chromium:1066415
Fixed: chromium:1058161
Change-Id: If7fccf2ed392ec47bf79e55470a0fd3cc5a8b880
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2144091
Commit-Queue: Mathias Bynens <17a2cbc4e33156874a9862b0f530521117e66a3d@chromium.org>
Reviewed-by: Tim van der Lippe <dba8716ee7f8d16236046f74d2167cb94410f6ed@chromium.org>

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