Best practice to remove design package in SharePoint 2013?
1 Answer
Best Practice is to not do it - as Microsoft doesn't support it.
"In SharePoint 2013 you cannot uninstall an imported design package, and you should never attempt to deactivate a design package through the solution gallery. If you do, page layout content types are removed and users may not be able to create subsites"
Reference: http://msdn.microsoft.com/en-us/library/office/jj862342.aspx
You may be able to work around this restriction if you export the page layout content types first, remove the custom ones, uninstall the package and then re-import the content types. I've not tested this method however.