refactor: remove unused imports across cloud page components

- Cleaned up unused component imports (CircleBackground, Button, Texts components)
- Removed unused utility function classNames
- Changed button color prop from "dark" to "white" in CallToAction component

src/pages/cloud/CalltoAction.tsx

@@ -1,6 +1,5 @@
 "use client";
 
-import { CircleBackground } from '../../components/CircleBackground'
 import { Container } from "@/components/Container";
 import { Button } from "@/components/Button";
 
@@ -39,7 +38,7 @@ export function CallToAction() {
               </div>
 
               <div className="flex flex-col items-center text-center max-w-xs">
-                <Button to="/cloud" variant="outline" color="dark" className="mt-4">
+                                <Button to="/cloud" variant="outline" color="white" className="mt-4">
                   Start Deploying
                 </Button>
               </div>