message: Remove legacy requestUrl support
diff: @@ -776,37 +776,12 @@ export class Container extends EventEmitterWithErrorHandling<IContainerEvents> i
  return undefined;
  }
  - // TODO: Remove support for legacy requestUrl in 0.20
  - const legacyResolver = this.urlResolver as {
  - requestUrl?(resolvedUrl: IResolvedUrl, request: IRequest): Promise<IResponse>;
  -
  - getAbsoluteUrl?(
  - resolvedUrl: IResolvedUrl,
  - relativeUrl: string,
  - ): Promise<string>;
  - };
  -
  - if (legacyResolver.getAbsoluteUrl !== undefined) {
  return this.urlResolver.getAbsoluteUrl(
  this.resolvedUrl,
  relativeUrl,
  this._context?.codeDetails);
  }
  - if (legacyResolver.requestUrl !== undefined) {
  - const response = await legacyResolver.requestUrl(
  - this.resolvedUrl,
  - { url: relativeUrl });
  -
  - if (response.status === 200) {
  - return response.value as string;
  - }
  - throw new Error(response.value);
  - }
  -
  - throw new Error("Url Resolver does not support creating urls");
  - }
  -
  public async proposeCodeDetails(codeDetails: IFluidCodeDetails) {
  if (!isFluidCodeDetails(codeDetails)) {
  throw new Error("Provided codeDetails are not IFluidCodeDetails");
  