Fix Rubocop offenses

Author: MrSerth

lib/py_unit_and_py_lint_adapter.rb

@@ -1,6 +1,8 @@
 # frozen_string_literal: true
 
 class PyUnitAndPyLintAdapter < TestingFrameworkAdapter
+  delegate :translate_linter, to: :PyLintAdapter
+
   def self.framework_name
     'PyUnit and PyLint'
   end
@@ -12,8 +14,4 @@ def parse_output(output)
       PyUnitAdapter.new.parse_output(output)
     end
   end
-
-  def translate_linter(result, locale)
-    PyLintAdapter.translate_linter(result, locale)
-  end
 end