shiny/example/goban: remove y-inversion workaround.

Also remove a redundant fill-with-dark-blue that is immediately
overwritten by the buffer upload.

Also remove an unnecessary size.Event local variable.

Change-Id: I23b5618ce0c93c48d661e08b9d43797cf6c78750
Reviewed-on: https://go-review.googlesource.com/14672
Reviewed-by: Rob Pike <r@golang.org>
1 file changed