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I'm trying to completely remove and reinstall QGIS on my system (Mac os 10.11.6). I follow the steps in the Kyngchaos and delete the existing application. But on reinstalling framework, components and program I still see old plugins from prior installation. I can't delete these which i what i want to do. As screenshot, they are there but i can't uninstall or reinstall as both boxes are greyed out. I've installed the latest Kyngchaos framwork and build 2.18.15. Please can someone advise where these are stored on my system so i can delte them.
EDIT by looking in the package contents and going to folder Plugins/qgis I can remove all but these which aren't in that folder. If i delete everything in the folder it causes QGIS to break and I have to reinstall;