Revert "Reduce DescribedClass class size to pass rubocop"

This reverts commit 3864576.

Author: sl4vr

lib/rubocop/cop/rspec/described_class.rb

@@ -128,7 +128,11 @@ def scope_change?(node)
         end
 
         def skippable_block?(node)
-          node.block_type? && !block_pattern?(node, rspec_all) && cop_config['SkipBlocks']
+          node.block_type? && !block_pattern?(node, rspec_all) && skip_blocks?
+        end
+
+        def skip_blocks?
+          cop_config['SkipBlocks']
         end
 
         def offensive?(node)