Remove unused shared examples

spec/shared/mutator_behavior.rb

@@ -1,55 +0,0 @@
-# encoding: UTF-8
-
-RSpec.shared_examples_for 'a mutator' do
-  subject { object.each(node, &yields.method(:<<)) }
-
-  let(:yields) { []              }
-  let(:object) { described_class }
-
-  unless instance_methods.include?(:node)
-    let(:node) { parse(source) }
-  end
-
-  it_should_behave_like 'a command method'
-
-  context 'with no block' do
-    subject { object.each(node) }
-
-    it { should be_instance_of(to_enum.class) }
-
-    def coerce(input)
-      case input
-      when String
-        Parser::CurrentRuby.parse(input)
-      when Parser::AST::Node
-        input
-      else
-        raise
-      end
-    end
-
-    def normalize(node)
-      Unparser::Preprocessor.run(node)
-    end
-
-    let(:expected_mutations) do
-      mutations.map(&method(:coerce)).map(&method(:normalize))
-    end
-
-    it 'generates the expected mutations' do
-      generated_mutations = subject.map(&method(:normalize))
-
-      verifier = MutationVerifier.new(node, expected_mutations, generated_mutations)
-
-      unless verifier.success?
-        fail verifier.error_report
-      end
-    end
-  end
-end
-
-RSpec.shared_examples_for 'a noop mutator' do
-  let(:mutations) { [] }
-
-  it_should_behave_like 'a mutator'
-end