Properly style call buttons across app, when already in a call

ts/util/getColorForCallLink.ts

@@ -18,11 +18,3 @@ export function getColorForCallLink(rootKey: string): string {
 
   return AvatarColors[index];
 }
-
-export function getKeyFromCallLink(callLink: string): string {
-  const url = new URL(callLink);
-  const hash = url.hash.slice(1);
-  const hashParams = new URLSearchParams(hash);
-
-  return hashParams.get('key') || '';
-}