message: remove unused caching geo ip lookup
diff: @@ -80,22 +80,3 @@ export class MmdbLocationService implements IpLocationService {
  });
  }
  }
  -
  -// An IpLocationService that caches the responses of another IpLocationService.
  -export class CachedIpLocationService implements IpLocationService {
  - // TODO: Make this cache bounded in size. Possibly use lru-cache.
  - private countryCache: Map<string, Promise<string>>;
  -
  - constructor(private locationService: IpLocationService) {
  - this.countryCache = new Map<string, Promise<string>>();
  - }
  -
  - countryForIp(ipAddress: string): Promise<string> {
  - if (this.countryCache.has(ipAddress)) {
  - return this.countryCache.get(ipAddress);
  - }
  - const promise = this.locationService.countryForIp(ipAddress);
  - this.countryCache.set(ipAddress, promise);
  - return promise;
  - }
  -}
  