[win32] Remove the call to clutter_redraw in clutter_stage_win32_show
[win32] Remove the call to clutter_redraw in clutter_stage_win32_show

Since commit 7b811f8b this is done in clutter_stage_show so there is
no need for it in the backends.

tardyp/clutter,Distrotech/clutter,djdeath/clutter,djdeath/clutter-android,djdeath/clutter,rkudiyarov/clutter_osx,ebassi/clutter,ebassi/clutter,GNOME/clutter,spatulasnout/clutter,spatulasnout/clutter,GNOME/clutter,collects/clutter,rkudiyarov/clutter_osx,tardyp/clutter,djdeath/clutter-multithreaded,djdeath/clutter,kerrickstaley/clutter-vala,ebassi/clutter,kerrickstaley/clutter-vala,rkudiyarov/clutter_osx,djdeath/clutter,collects/clutter,kerrickstaley/clutter-vala,GNOME/clutter,tardyp/clutter,spatulasnout/clutter,djdeath/clutter-android,djdeath/clutter-android,djdeath/clutter-multithreaded,jigpu/clutter,collects/clutter,collects/clutter,Distrotech/clutter,dlespiau/clutter,nobled/clutter,kerrickstaley/clutter-vala,djdeath/clutter-multithreaded,GNOME/clutter,rkudiyarov/clutter_osx,djdeath/clutter-multithreaded,dlespiau/clutter,djdeath/clutter-android,heysion/clutter-clone,Distrotech/clutter,nobled/clutter,heysion/clutter-clone,Distrotech/clutter,spatulasnout/clutter,djdeath/clutter,djdeath/clutter-android,Distrotech/clutter,spatulasnout/clutter,heysion/clutter-clone,heysion/clutter-clone,jigpu/clutter,ebassi/clutter,djdeath/clutter,jigpu/clutter,collects/clutter,jigpu/clutter,dlespiau/clutter,GNOME/clutter,jigpu/clutter,jigpu/clutter,nobled/clutter,Distrotech/clutter,ebassi/clutter,heysion/clutter-clone