Fix login loop where the sso flow returns to #/login

due to fragmentAfterLogin going back to `#/login`
and https://github.com/vector-im/riot-web/issues/11643

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

src/vector/platform/VectorBasePlatform.ts

@@ -37,12 +37,6 @@ export const updateCheckStatusEnum = {
 export default abstract class VectorBasePlatform extends BasePlatform {
     protected _favicon: Favicon;
 
-    constructor() {
-        super();
-
-        this.startUpdateCheck = this.startUpdateCheck.bind(this);
-    }
-
     async getConfig(): Promise<{}> {
         return getVectorConfig();
     }