code: @Override
      public DeleteSubnetResult deleteSubnet(DeleteSubnetRequest request) {
          request = beforeClientExecution(request);
          return executeDeleteSubnet(request);
      }
docs: <p>
  Deletes the specified subnet. You must terminate all running instances in the subnet before you can delete the
  subnet.
  </p>
  
  @param deleteSubnetRequest
  @return Result of the DeleteSubnet operation returned by the service.
  @sample AmazonEC2.DeleteSubnet
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/ec2-2016-11-15/DeleteSubnet" target="_top">AWS API
  Documentation</a>