Remove 'scc-codestyle' from dependencies

This commit removes the gem 'scc-codestyle' from the project, and adds
'rubocop-rspec' as a direct dependency to continue having the a similar
set of linter rules.

The 'scc-codestyle' version in use was too outdated, and updating it to
a newer one would require a heavy restyling of the code.

.rubocop.yml

@@ -1,24 +1,16 @@
-# Rubocop version is locked in the dependencies of scc-codestyle gem.
-# The version of scc-codestyle gem is specified in the Dockerfile.
-inherit_gem:
-  scc-codestyle:
-    - default.yml
+require:
+  - rubocop-rspec
 
 inherit_from: .rubocop_todo.yml
 
 AllCops:
-  Include:
-    - Gemfile
-    - config.ru
+  NewCops: disable
   Exclude:
     - .bundle/**/*
     - vendor/**/*
     - package/*
     - Rakefile
 
-Rails:
-  Enabled: false
-
 # Impossible to satisfy these rules in specs
 RSpec/ExpectInHook:
   Enabled: false

Gemfile

@@ -4,5 +4,5 @@ gem 'yast-rake', '~> 0.2.20'
 
 group :development do
   gem 'gettext'
-  gem 'scc-codestyle', '~> 0.1.4'
+  gem 'rubocop-rspec', '~> 1.19.0'
 end

Gemfile.lock

@@ -24,9 +24,6 @@ GEM
     rubocop-rspec (1.19.0)
       rubocop (>= 0.51.0)
     ruby-progressbar (1.9.0)
-    scc-codestyle (0.1.4)
-      rubocop (= 0.52.1)
-      rubocop-rspec (= 1.19)
     text (1.3.1)
     unicode-display_width (1.3.0)
     yast-rake (0.2.20)
@@ -38,7 +35,7 @@ PLATFORMS
 
 DEPENDENCIES
   gettext
-  scc-codestyle (~> 0.1.4)
+  rubocop-rspec (~> 1.19.0)
   yast-rake (~> 0.2.20)
 
 BUNDLED WITH