Revert "Automated tests run by Maven fix for 4.4.1"

This reverts commit 66169bde6df6fb8dcd45fd66827e85953b596297.
Revert changes relate t p2.inf workaround

Causes side effects such as breaking Eclipse 'Uninstall' and 'Upgrade'.
Merge branch 'master' of github.com:spring-projects/eclipse-integration-gradle