removed m_isCaretAtEnd optimization added in rev 1.232 as we don't always detect when the carets position changes

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@32077 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/textctrl.h

@@ -260,12 +260,6 @@ private:
     wxMenu* m_privateContextMenu;
 
     bool m_isNativeCaretShown;
-
-    // this is an optimization: instead of checking all the time whether we
-    // need to move the caret to the end of text (before appending to the
-    // control), we remember whether it is already at the end of text in this
-    // variable
-    bool m_isCaretAtEnd;
 };
 
 #endif