message: Remove unneeded read method in mocked UrlReader
diff: @@ -59,9 +59,6 @@ const testFileTwoContent = 'testFileTwo content';
  const genericFileContent = 'file content';
  const mockUrlReader: UrlReader = {
  - read() {
  - throw new Error('read not implemented.');
  - },
  readUrl(url: string) {
  switch (url) {
  case 'testFileOne':
  