Remove Devise patch

[bpurinton]

On #36 while updating Rails to 7.1 and bumping gems, I was getting some deprecation warnings from Devise that are a known (still unfixed) issue:

heartcombo/devise#5644

I fixed this, per the suggestion on that issue, with a config/initializers/devise_patch.rb file. This is a bit awkward but I don't see another work around until they make an official fix to the gem. We can monitor the issue and test and remove the patch file if / when it is fixed.