spice-widget: remove old warning
spice-widget: remove old warning

This log was introduced in 13f5ebbf07a3 to track the situation where
the GdkCursor pointer would be invalid/NULL. That was possible if the
caller passed a NULL for rgba pointer in cursor_set().

Code has changed a bit since then, it isn't necessary to log a warn in
the unlikely event of cursor_shape being NULL.

Signed-off-by: Victor Toso <39b7599ff73bbf5db531748ba5250f21fa7120ff@redhat.com>
Reported-by: Frediano Ziglio <55d48b080b2e443e395cde84d2c83b135a4ff48e@redhat.com>
Acked-by: Frediano Ziglio <55d48b080b2e443e395cde84d2c83b135a4ff48e@redhat.com>

flexVDI/spice-gtk,flexVDI/spice-gtk