remove window import

dashboard/src/components/ProvisionerFlow.tsx

@@ -14,7 +14,6 @@ import Fieldset from "./porter/Fieldset";
 import Checkbox from "./porter/Checkbox";
 import Button from "./porter/Button";
 import ExpandableSection from "./porter/ExpandableSection";
-import Window from "./porter/Window";
 
 const providers = ["aws", "gcp", "azure"];