Remove import statement for not being used in the code.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@74115 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix typo in comments.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@74116 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775