Deletes an alias.
The 'callback' parameter specifies a function which will be called when the operation completes (or an error is encountered). If the 'callback' parameter is not specified, then the method will block and will not return until the operation completes (or an error is encountered).
The callback for this method is defined as:
'err' is the error that occurred. If there was no error, then 'err' is 'null'.
'err' has 2 properties which hold detailed information:
This method deletes the alias with the given AliasName.
The value passed for the AliasName parameter must include the alias/ prefix, and must be the name of an alias in the current account and Region