Remove stale dependencies

[SkyHacks]

Objective:

Remove unused dependencies.

Motivation:

The version of superagent being required is causing a vulnerability warning in wt-cli.

Summary:

Package	Why It's Safe To Remove
chalk	Added for dependency checker which was later removed
cli-table	Added for dependency checker which was later removed
glob	Added for recursively matching nested deps but was refactored out
readline-sync	Added for dependency checker which was later removed
semver	Added to support local dep resolution but was refactored out
superagent	Added to load LIST_MODULES_URL and was refactored out

No direct references can be found for these modules and every reasonable effort has been made to identify indirect references.

If approved and merged, please create a new NPM release.

[SkyHacks]

All tests passing.