widget: remove superflous WIN32 check
widget: remove superflous WIN32 check

The egl call is already inside a X11 conditional block.

Signed-off-by: Marc-André Lureau <a6f2b960a4aca61381fc650a67901b2ac8e83e6d@gmail.com>
Acked-by: Pavel Grunt <fbda40b445316123f12a5a6bd7556918ea74f4bc@redhat.com>

fgouget/spice-gtk,fgouget/spice-gtk,SPICE/spice-gtk,fgouget/spice-gtk,SPICE/spice-gtk,flexVDI/spice-gtk,SPICE/spice-gtk,flexVDI/spice-gtk,SPICE/spice-gtk