maintner/maintnerd: remove debugging left in by mistake from earlier CL

I added this while verifying CL 209967 worked (to cut down on log
spam) but forgot to remove it.

Change-Id: I906470b260f311b98f838aba072bf39ee02dd09c
Reviewed-on: https://go-review.googlesource.com/c/build/+/210282
Reviewed-by: Matt Layher <mdlayher@gmail.com>
diff --git a/maintner/maintnerd/maintnerd.go b/maintner/maintnerd/maintnerd.go
index d062578..b5ca11f 100644
--- a/maintner/maintnerd/maintnerd.go
+++ b/maintner/maintnerd/maintnerd.go
@@ -355,8 +355,6 @@
 	}
 	*pubsub = "https://pubsubhelper.golang.org"
 	*watchGithub = strings.Join(goGitHubProjects, ",")
-	*watchGithub = "golang/sys"
-	return
 
 	gerrc := gerrit.NewClient("https://go-review.googlesource.com", gerrit.NoAuth)
 	projs, err := gerrc.ListProjects(context.Background())