dashboard: remove unnecessary builder from boring crypto

This change removes an unnecessary builder from the logic used to run
a build on boring crypto changes.

Updates golang/go#47845

Change-Id: I2223db8907feea72a80cdeb5629abc02512ee0f2
Reviewed-on: https://go-review.googlesource.com/c/build/+/368155
Trust: Carlos Amedee <carlos@golang.org>
Run-TryBot: Carlos Amedee <carlos@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
diff --git a/dashboard/builders.go b/dashboard/builders.go
index cee2eca..c7a12af 100644
--- a/dashboard/builders.go
+++ b/dashboard/builders.go
@@ -1326,7 +1326,7 @@
 
 	// Build dev.boringcrypto branches only on linux/amd64 and windows/386 (see golang.org/issue/26791).
 	if repo == "go" && (branch == "dev.boringcrypto" || strings.HasPrefix(branch, "dev.boringcrypto.")) {
-		if c.Name != "linux-amd64" && c.Name != "windows-386-2012" && c.Name != "windows-386-2008" {
+		if c.Name != "linux-amd64" && c.Name != "windows-386-2008" {
 			return false
 		}
 	}