void deleteBlob(BlobId blobId, ConnectedChannel channel) throws IOException {
    DeleteRequest deleteRequest = new DeleteRequest(1, "client1", blobId, time.milliseconds());
    DeleteResponse deleteResponse = DeleteResponse.readFrom(channel.sendAndReceive(deleteRequest).getInputStream());
    Assert.assertEquals(ServerErrorCode.NoError, deleteResponse.getError());
  }
Deletes a single blob from ambry server node
@param blobId the {@link BlobId} that needs to be deleted
@param channel the {@link ConnectedChannel} to use to send and receive data
@throws IOException
ambry-server/src/integration-test/java/com/github/ambry/server/ServerHardDeleteTest.java