Don't bundle node-pre-gyp (#5520)
Don't bundle node-pre-gyp (#5520)

Bundling node-pre-gyp was only needed for node v4 and earlier.

Remove it to avoid errors like:

> npm ERR! enoent ENOENT: no such file or directory, rename '/home/circleci/project/node_modules/node_or_tools/node_modules/abbrev' -> '/home/circleci/project/node_modules/node_or_tools/node_modules/.abbrev.DELETE'

More context: https://github.com/mapbox/node-pre-gyp/issues/260#issuecomment-407222286
Project-OSRM/osrm-backend,frodrigo/osrm-backend,Project-OSRM/osrm-backend,frodrigo/osrm-backend,Project-OSRM/osrm-backend,yuryleb/osrm-backend,yuryleb/osrm-backend,Project-OSRM/osrm-backend,frodrigo/osrm-backend,yuryleb/osrm-backend,frodrigo/osrm-backend,yuryleb/osrm-backend