chore: remove multi-organization and custom role experiment (#14862)

Closes https://github.com/coder/coder/issues/14704

---------

Co-authored-by: Kayla Washburn-Love <mckayla@hey.com>

enterprise/cli/templatecreate_test.go

@@ -139,14 +139,8 @@ func TestTemplateCreate(t *testing.T) {
 	t.Run("SecondOrganization", func(t *testing.T) {
 		t.Parallel()
 
-		dv := coderdtest.DeploymentValues(t)
-		dv.Experiments = []string{
-			string(codersdk.ExperimentCustomRoles),
-			string(codersdk.ExperimentMultiOrganization),
-		}
 		ownerClient, _ := coderdenttest.New(t, &coderdenttest.Options{
 			Options: &coderdtest.Options{
-				DeploymentValues: dv,
 				// This only affects the first org.
 				IncludeProvisionerDaemon: false,
 			},