Removed a useless XML parser benchmark.

benchmark/xml/parser/element_bench.rb

@@ -1,19 +0,0 @@
-require_relative '../../benchmark_helper'
-
-simple     = '<p>Hello world</p>'
-attributes = '<p class="foo">Hello world</p>'
-nested     = '<p>Hello<strong>world</strong></p>'
-
-Benchmark.ips do |bench|
-  bench.report 'text only' do
-    Oga::XML::Parser.new(simple).parse
-  end
-
-  bench.report 'text + attributes' do
-    Oga::XML::Parser.new(attributes).parse
-  end
-
-  bench.report 'text + children' do
-    Oga::XML::Parser.new(nested).parse
-  end
-end