Remove unnecessary segfault workarounds - segfault issues are fixed with Qt 4.8

lib/capybara/poltergeist/client/agent.coffee

@@ -170,6 +170,3 @@ document.addEventListener(
   'DOMContentLoaded',
   -> console.log('__DOMContentLoaded')
 )
-
-# Important to return true here - Phantom seems to choke otherwise
-true

lib/capybara/poltergeist/client/compiled/agent.js

@@ -195,4 +195,3 @@ window.__poltergeist = new PoltergeistAgent;
 document.addEventListener('DOMContentLoaded', function() {
   return console.log('__DOMContentLoaded');
 });
-true;

spec/integration/session_spec.rb

@@ -3,11 +3,6 @@ require 'capybara/spec/session'
 
 describe Capybara::Session do
   context 'with poltergeist driver' do
-    # This seems to prevent some segfaulting of PhantomJS when the tests are run all together :( :(
-    before(:all) do
-      TestSessions::Poltergeist.driver.restart
-    end
-
     before do
       @session = TestSessions::Poltergeist
     end