Clean up Visual Studio properties files after switching to CMake.
* win/tools/WinTools.make: Removed.
* win/tools/vsprops: Removed.
* win/tools/vsprops/FeatureDefines.props: Removed.
* win/tools/vsprops/FeatureDefinesCairo.props: Removed.
* win/tools/vsprops/GStreamer32.props: Removed.
* win/tools/vsprops/GStreamer64.props: Removed.
* win/tools/vsprops/GStreamerCommon.props: Removed.
* win/tools/vsprops/WinCairo.props: Removed.
* win/tools/vsprops/cURL.props: Removed.
* win/tools/vsprops/common.props: Removed.
* win/tools/vsprops/debug.props: Removed.
* win/tools/vsprops/debug_wincairo.props: Removed.
* win/tools/vsprops/debugsuffix.props: Removed.
* win/tools/vsprops/production.props: Removed.
* win/tools/vsprops/release.props: Removed.
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@201917
268f45cc-cd09-0410-ab3c-
d52691b4dbfc