Iterate method first and then sequence when removing a feature.

git-svn-id: https://svn.code.sf.net/p/genoviz/code/trunk@14848 80d5a9c2-7d8c-4c9f-9369-4e03bca4d2bd
Removing unnecessary method.

git-svn-id: https://svn.code.sf.net/p/genoviz/code/trunk@14849 80d5a9c2-7d8c-4c9f-9369-4e03bca4d2bd
Removing unnecessary method and class related to removing graph.

git-svn-id: https://svn.code.sf.net/p/genoviz/code/trunk@14850 80d5a9c2-7d8c-4c9f-9369-4e03bca4d2bd
Removing unnecessary use of remove item for graph.

git-svn-id: https://svn.code.sf.net/p/genoviz/code/trunk@14851 80d5a9c2-7d8c-4c9f-9369-4e03bca4d2bd
Merge remote-tracking branch 'upstream'