[branches/1.0] removed unnecessary call to refresh to minimize OnPaintCalls
[branches/1.0] removed unnecessary call to refresh to minimize OnPaintCalls


git-tfs-id: [https://tfs.codeplex.com/tfs/TFS01]$/SharpMap/Branches/1.0;C105015

SharpMap/SharpMap,SharpMap/SharpMap,nhvu1988/SharpMap,nhvu1988/SharpMap