Fix Steam elevated check on Linux

src/main/services/steam.service.ts

@@ -52,7 +52,6 @@ export class SteamService {
      * @returns true if the Steam process is running as administrator
      */
     public async isElevated(): Promise<boolean>{
-        if(process.platform === "linux"){ return true; }
         const steamPid = await this.getSteamPid();
 
         if(!steamPid){ return false; }