chore: Remove DEPLOYMENT and SUBDOMAINS_ENABLED (#5742)

app/utils/isCloudHosted.ts

@@ -3,6 +3,10 @@ import env from "~/env";
 /**
  * True if the current installation is the cloud hosted version at getoutline.com
  */
-const isCloudHosted = env.DEPLOYMENT === "hosted";
+const isCloudHosted = [
+  "https://app.getoutline.com",
+  "https://app.outline.dev",
+  "https://app.outline.dev:3000",
+].includes(env.URL);
 
 export default isCloudHosted;