fixing rubocop config to remove github references

config/rubocop/default.yml

@@ -1,5 +1,3 @@
-require: rubocop/cop/github
-
 AllCops:
   DisabledByDefault: true
 

config/rubocop/rails.yml

@@ -20,69 +20,6 @@ Rails/ScopeArgs:
 Rails/UniqBeforePluck:
   Enabled: true
 
-GitHub/RailsApplicationRecord:
-  Enabled: true
-
-GitHub/RailsControllerRenderActionSymbol:
-  Enabled: true
-  Include:
-    - 'app/controllers/**/*.rb'
-
-GitHub/RailsControllerRenderLiteral:
-  Enabled: true
-  StyleGuide: https://github.com/github/rubocop-github/blob/master/guides/rails-render-literal.md
-  Include:
-    - 'app/controllers/**/*.rb'
-
-GitHub/RailsControllerRenderPathsExist:
-  Enabled: true
-  ViewPath:
-    - 'app/views'
-  Include:
-    - 'app/controllers/**/*.rb'
-
-GitHub/RailsControllerRenderShorthand:
-  Enabled: true
-  StyleGuide: https://github.com/github/rubocop-github/blob/master/guides/rails-controller-render-shorthand.md
-  Include:
-    - 'app/controllers/**/*.rb'
-
-GitHub/RailsRenderInline:
-  Enabled: true
-  StyleGuide: https://github.com/github/rubocop-github/blob/master/guides/rails-controller-render-inline.md
-  Include:
-    - 'app/controllers/**/*.rb'
-    - 'app/helpers/**/*.rb'
-    - 'app/view_models/**/*.rb'
-    - 'app/views/**/*.erb'
-
-GitHub/RailsRenderObjectCollection:
-  Enabled: false
-
-GitHub/RailsViewRenderLiteral:
-  Enabled: true
-  StyleGuide: https://github.com/github/rubocop-github/blob/master/guides/rails-render-literal.md
-  Include:
-    - 'app/helpers/**/*.rb'
-    - 'app/view_models/**/*.rb'
-    - 'app/views/**/*.erb'
-
-GitHub/RailsViewRenderPathsExist:
-  Enabled: true
-  ViewPath:
-    - 'app/views'
-  Include:
-    - 'app/helpers/**/*.rb'
-    - 'app/view_models/**/*.rb'
-    - 'app/views/**/*.erb'
-
-GitHub/RailsViewRenderShorthand:
-  Enabled: true
-  Include:
-    - 'app/helpers/**/*.rb'
-    - 'app/view_models/**/*.rb'
-    - 'app/views/**/*.erb'
-
 # Exclude Rails ERB files from incompatible cops
 
 Lint/BlockAlignment: