Remove bundler-audit from .codeclimate.yml
Remove bundler-audit from .codeclimate.yml

**Why**: `bundler-audit` requires `Gemfile.lock` to be checked in, but it is gitignored on purpose in this repo. Enabling bundler-audit causes the Code Climate check to fail, but then seems to also prevent the rest of the engines from running.

Houdini/two_factor_authentication,Houdini/two_factor_authentication,benjaminwols/two_factor_authentication,benjaminwols/two_factor_authentication,Houdini/two_factor_authentication,benjaminwols/two_factor_authentication