Remove test workaround for CDI-727

Test EntityListenerBeanManagerInjectionTestCase used to fail with security manager due to CDI-727. However, a workaround has been applied to the test with WFLY-10125 - which seems wrong - the test should rather have been @ Ignored when running with security manager.

However, the original issue was already fixed with the component upgrade WFLY-10740 however the workaround has been kept in place which can mask further issues.

cd testsuite/integration/basic
mvn clean test -Dtest=EntityListenerBeanManagerInjectionTestCase -Dsecurity.manager