This code recaptured the mouse in the window which had already had it, thus
triggering the (recently added, see r74677) asserts in CaptureMouse(). It also
didn't preserve the invariant of m_winCapture always having the capture. And
it was apparently completely unnecessary too.
So simply remove it to fix the asserts while drag-resizing wxGrid rows/columns.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74752 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
c7ea5a0c7e