Delete the remainder of groups (#9357)

* Delete the remainder of groups

Fixes https://github.com/vector-im/element-web/issues/22770
Continues https://github.com/matrix-org/matrix-react-sdk/pull/8027

* Don't need the strings either

src/utils/permalinks/ElementPermalinkConstructor.ts

@@ -43,17 +43,11 @@ export default class ElementPermalinkConstructor extends PermalinkConstructor {
         return `${this.elementUrl}/#/user/${userId}`;
     }
 
-    forGroup(groupId: string): string {
-        return `${this.elementUrl}/#/group/${groupId}`;
-    }
-
     forEntity(entityId: string): string {
         if (entityId[0] === '!' || entityId[0] === '#') {
             return this.forRoom(entityId);
         } else if (entityId[0] === '@') {
             return this.forUser(entityId);
-        } else if (entityId[0] === '+') {
-            return this.forGroup(entityId);
         } else throw new Error("Unrecognized entity");
     }
 
@@ -107,8 +101,6 @@ export default class ElementPermalinkConstructor extends PermalinkConstructor {
             const eventId = parts.length > 2 ? parts.slice(2).join('/') : "";
             const via = query.split(/&?via=/).filter(p => !!p);
             return PermalinkParts.forEvent(entity, eventId, via);
-        } else if (entityType === 'group') {
-            return PermalinkParts.forGroup(entity);
         } else {
             throw new Error("Unknown entity type in permalink");
         }