Gopher: remove expired link

Fixes golang/go#69213

Change-Id: Id6ca6217ecd8cefaa3adef056567af2e093ad750
Reviewed-on: https://go-review.googlesource.com/c/wiki/+/610135
Commit-Queue: Sean Liao <sean@liao.dev>
Commit-Queue: Ian Lance Taylor <iant@golang.org>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
diff --git a/Gopher.md b/Gopher.md
index 4c332f6..1c409ec 100644
--- a/Gopher.md
+++ b/Gopher.md
@@ -14,7 +14,6 @@
 * [golang graphics](https://github.com/mholt/golang-graphics)
 * [print-ready swimming gopher](https://gumroad.com/l/golang)
 * [go gopher vector](https://github.com/keygx/Go-gopher-Vector)
-* [gopher gala](http://www.gophergala.com/)
 * [gophericons](https://github.com/hackraft/gophericons)
 * [gophers by Egon Elbre](https://github.com/egonelbre/gophers)
 * [Go Gopher model (3d)](https://github.com/StickmanVentures/go-gopher-model)