tdf#92982 vcl rendercontext: no need to tweak map mode in PaintBuffer()
tdf#92982 vcl rendercontext: no need to tweak map mode in PaintBuffer()

This used to be necessary, but now that the "copy settings from the
window to the buffer" is always guarded with PaintBufferGuard, it's
actually one of the places that do modify the buffer settings without
undoing that later.

Change-Id: I7fde878635ffc7de7027d6d8f8de47935fc4870e

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core