Merge branch 'rmv_symbols_3' of https://github.com/catalinr/wxWidgets

Remove obsolete mentions of Windows 9x, Windows CE and OS/2.

src/common/dcbase.cpp

@@ -1320,8 +1320,6 @@ It uses wxDCBase::CalculateEllipticPoints(...) and wxDCBase::Rotate(...),
 which are also new.
 
 All methods are generic, so they can be implemented in wxDCBase.
-DoDrawEllipticArcRot(...) is virtual, so it can be called from deeper
-methods like (WinCE) wxDC::DoDrawArc(...).
 
 CalculateEllipticPoints(...) fills a given list of wxPoints with some points
 of an elliptic arc. The algorithm is pixel-based: In every row (in flat