remove deprecated Node#parent

lib/capybara/node/base.rb

@@ -108,12 +108,6 @@ module Capybara
         base.find_xpath(xpath)
       end
 
-      # @deprecated Use query_scope instead
-      def parent
-        warn "DEPRECATED: #parent is deprecated in favor of #query_scope - Note: #parent was not the elements parent in the document so it's most likely not what you wanted anyway"
-        query_scope
-      end
-
       # @api private
       def session_options
         session.config

lib/capybara/spec/session/node_spec.rb

@@ -27,14 +27,6 @@ Capybara::SpecHelper.spec "node" do
     end
   end
 
-  describe "#parent" do
-    it "should be deprecated" do
-      @node = @session.find(:css, '#first')
-      expect(@node).to receive(:warn).with(/^DEPRECATED:/)
-      expect(@node.parent).to eq(@node.query_scope)
-    end
-  end
-
   describe "#text" do
     it "should extract node texts" do
       expect(@session.all('//a')[0].text).to eq('labore')