[pypy-dev] kill Testrunner scratchbox support? (arm develoment)

Hi, in the refine-testrunner branch i am currently refactoring the testrunner to allow easyer reasoning about its code and support junitxml (for better result metadata than the resultlog format) While doing so i noticed that we don't seem to use scratchbox anymore, but (according to a comment from armin on IRC) rather a modern alternative. So i am wondering if I can maybe scrap the support. However i would need some help of someone that handled the current arm setup, to roughly explain the current setup/needs. -- Ronny