Remove bower re-install code in `integration.js`

[JordanMartinez]

See #401 (review) for more context.

To fix this, we would need to do the following:

• Make a release for prelude, effect, console, and psci-support where their bower.json file's dependencies versions point to actual versions (e.g. ^7.0.0)
• Update Init.purs to install those versions rather than the es-modules-libraries branch
• Drop the 'bower re-install' code in integration.js

[JordanMartinez]

Closed by #406