message: Remove manipulation of attach request headers from Container
diff: @@ -36,7 +36,6 @@ import {
  IDocumentStorageService,
  IFluidResolvedUrl,
  IResolvedUrl,
  - DriverHeader,
  } from "@fluidframework/driver-definitions";
  import {
  BlobCacheStorageService,
  @@ -665,13 +664,6 @@ export class Container extends EventEmitterWithErrorHandling<IContainerEvents> i
  assert(!!this.cachedAttachSummary,
  "Summary should be there either by this attach call or previous attach call!!");
  - if (request.headers?.[DriverHeader.createNew] === undefined) {
  - request.headers = {
  - ...request.headers,
  - [DriverHeader.createNew]: {},
  - };
  - }
  -
  const createNewResolvedUrl = await this.urlResolver.resolve(request);
  ensureFluidResolvedUrl(createNewResolvedUrl);
  // Actually go and create the resolved document
  