remove users utils module

lib/users.rb

@@ -1,24 +0,0 @@
-# frozen_string_literal: true
-
-module Users
-  module_function
-
-  def from_omniauth(oauth)
-    user = User.find_by(email: oauth.info.email.to_s.downcase)
-
-    return user if user
-
-    case oauth['provider'].to_s
-    when 'google_oauth2'
-      User.new(email: oauth.info.email,
-               first_name: oauth.extra.id_info.given_name,
-               last_name: oauth.extra.id_info.family_name)
-    when 'microsoft_office365'
-      User.new(email: oauth.info.email,
-               first_name: oauth.info.first_name,
-               last_name: oauth.info.last_name)
-    when 'github'
-      User.new(email: oauth.info.email, first_name: oauth.info.name)
-    end
-  end
-end