Remove legacy client-manager workflows

platform/service/distribution_build_execution_test.go

@@ -632,7 +632,7 @@ func TestCoreServiceReportsPlatformBuilderUnavailable(t *testing.T) {
 	}
 	seen := 0
 	for _, action := range actions.Actions {
-		if action.Key != "generate-run" && action.Key != "generate-client-manager" {
+		if action.Key != "generate-run" {
 			continue
 		}
 		seen++
@@ -640,8 +640,8 @@ func TestCoreServiceReportsPlatformBuilderUnavailable(t *testing.T) {
 			t.Fatalf("expected explicit platform builder unavailable reason, got %+v", action)
 		}
 	}
-	if seen != 2 {
-		t.Fatalf("expected both build actions, got %+v", actions.Actions)
+	if seen != 1 {
+		t.Fatalf("expected run build action, got %+v", actions.Actions)
 	}
 
 	_, err = svc.GenerateRunDistributionForSession(session, domain.RunDistributionGenerateRequest{