Deleted all old files in preparation for Page Builder 2.0 upload.

git-svn-id: https://plugins.svn.wordpress.org/siteorigin-panels/trunk@1044785 b8457f37-d9ea-0310-8a92-e5e31aec5664
Page Builder 2.0 commit.

git-svn-id: https://plugins.svn.wordpress.org/siteorigin-panels/trunk@1044786 b8457f37-d9ea-0310-8a92-e5e31aec5664