Remove unnecessary spec and model

Author: mcelicalderon

app/models/graphql_devise/application_record.rb

@@ -2,8 +2,4 @@
   it 'has a version number' do
     expect(GraphqlDevise::VERSION).not_to be nil
   end
-
-  it 'does something useful' do
-    expect(true).to eq(true)
-  end
 end