Revert the use of AWS.Client.Delete which is not available on AWS 2016 and forces to use AWS 2017 but AWS 2017 cannot be compiled out of the box with gcc 4.9 which is the default on Ubuntu 16.04.  Avoid using AWS and use curl if one need to use the Delete operation, or, manually change the Do_Delete procedure.
Revert the use of AWS.Client.Delete which is not available on AWS 2016 and forces to use
AWS 2017 but AWS 2017 cannot be compiled out of the box with gcc 4.9 which is the default
on Ubuntu 16.04.  Avoid using AWS and use curl if one need to use the Delete operation,
or, manually change the Do_Delete procedure.

stcarrez/ada-util,stcarrez/ada-util