DeleteUserContactsStr()
From Rackspace Email & Apps API
This function will remove one or more contacts from a user's address book. The contacts must be identified using the "id" element returned by GetUserContactsFull() or GetUserContactsFullStr().
Input Parameters
Four strings, an array of integers, and a result integer
Administrative username, Administrative password, Domain name, User ID (the portion of the email address before the @ symbol), Contact ID list (string: semi-colon delimited list of contact ID's to remove from the address book),
Result integer
Return Values
If successful, the return value of the function will be 1.
Consult the Result Code Table for a list of result codes and their meaning.