Milo Refactor: Remove theme support

milo/appengine/buildbot/build_test.go

Index: milo/appengine/buildbot/build_test.go
diff --git a/milo/appengine/buildbot/build_test.go b/milo/appengine/buildbot/build_test.go
index 5540c605c3aff4302ca0b0423b199c717edb8036..b5db334148d20599bc07f2119a21dbb3a17347c9 100644
--- a/milo/appengine/buildbot/build_test.go
+++ b/milo/appengine/buildbot/build_test.go
@@ -18,7 +18,6 @@ import (
 	"github.com/luci/luci-go/common/clock/testclock"
 	memcfg "github.com/luci/luci-go/common/config/impl/memory"
 	"github.com/luci/luci-go/luci_config/server/cfgclient/backend/testconfig"
-	"github.com/luci/luci-go/milo/common/miloerror"
 	"github.com/luci/luci-go/server/auth"
 	"github.com/luci/luci-go/server/auth/authtest"
 	"github.com/luci/luci-go/server/auth/identity"
@@ -94,10 +93,7 @@ func TestBuild(t *testing.T) {
 				Internal:    true,
 			})
 			_, err := getBuild(c, "fake", "fake", 1)
-			So(err, ShouldResemble, miloerror.Error{
-				Message: "You are not authenticated, try logging in",
-				Code:    401,
-			})
+			So(err, ShouldResemble, errNotAuth)
 		})
 	})
 }