Remove plugin

Hey,

I'm trying to uninstall plugin HTTP-REST I did all as written in KB:

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2003386

But I still can see actions and workflows connected to this plugin. When I;m trying to remove it manually I can't do it the delete option is grey out

please help

Zbyszek