default wm: removed "region"; unnecessary ASSERT on COLOR window
default wm: removed "region"; unnecessary ASSERT on COLOR window

a window with DWCAPS_COLOR will trigger an assert since the region
is not set. since the region is not used at all, it is removed.
DWCAPS_COLOR is still not supported -> the window is not drawn.

lancebaiyouview/DirectFB,dfbdok/DirectFB1,kaostao/directfb,lancebaiyouview/DirectFB,djbclark/directfb-core-DirectFB,djbclark/directfb-core-DirectFB,kevleyski/DirectFB-1,sklnet/DirectFB,sklnet/DirectFB,kaostao/directfb,deniskropp/DirectFB,sklnet/DirectFB,kevleyski/directfb,djbclark/directfb-core-DirectFB,deniskropp/DirectFB,deniskropp/DirectFB,kevleyski/directfb,lancebaiyouview/DirectFB,mtsekm/test,jcdubois/DirectFB,deniskropp/DirectFB,Distrotech/DirectFB,jcdubois/DirectFB,sklnet/DirectFB,Distrotech/DirectFB,kevleyski/directfb,kevleyski/DirectFB-1,djbclark/directfb-core-DirectFB,Distrotech/DirectFB,mtsekm/test,dfbdok/DirectFB1,lancebaiyouview/DirectFB,jcdubois/DirectFB,kevleyski/DirectFB-1,kaostao/directfb,DirectFB/directfb,DirectFB/directfb,dfbdok/DirectFB1,mtsekm/test,kevleyski/DirectFB-1,DirectFB/directfb,kevleyski/directfb