remove empty test method
The default request method String should be 'GET'
GRAILS-11247 - Should Not Create New Domain Class Instance For non-POST Requests
Merge branch '2.3.x'

Conflicts:
	grails-plugin-controllers/src/main/groovy/org/codehaus/groovy/grails/plugins/web/api/ControllersApi.java
	grails-plugin-testing/src/main/groovy/grails/test/mixin/web/ControllerUnitTestMixin.groovy
fix failing test

The default request method for unit tests should be GET