chore(): removing the new peers, unneeded and confusing to existing users

[jamesdaniels]

Checklist

• Issue number for this PR: 5.2.0 requires peer dependencies firebase-tools, fuzzy, inquirer, and inquirer-autocomplete-prompt #2094
• Docs included?: not needed
• Test units included?: covered by existing
• In a clean directory, yarn install, yarn test run successfully? yes

Description

The new peerDependencies included for the schematics aren't necessary to include in the published package and the peer warnings are confusing, especially for yarn users.

The dependencies on fuzzy, inquirer, and the @angular-devkit/* are taken care of if the developer uses ng add @angular/fire (4ed421c) and are only used in that step.

The firebase-tools dependency doesn't have to be expressed as a peer, as if you try to do ng deploy without firebase-tools installed you get a good error:

Error when trying to deploy: 
Cannot find module 'firebase-tools'

[jamesdaniels]

This is minor enough and the tests are green, cutting as 5.2.1.

[jhuleatt]

Sorry I missed this, LGTM

[jamesdaniels]

@jhuleatt no worries, I had already cut since it was straight forward enough and passed smoke tests. Thanks for the green light for merge.