Removes API Programming guide due to being outdated

Removing until it can be accurately maintained.

Change-Id: I212508ec4315140633c75596560792618560f987
bug 1221203 Fixes Wadl file and adds more description to role.

Change-Id: I7decd4805ae23da11a1e95e04daf17529fabcf38
heat : Add files parameter to create/update stack API

https://review.openstack.org/#/c/33008/ added the "files" parameter
but we're missing documentation for it in the api-site.

Change-Id: I2421e1e1cf7a18d402d64100e71fddc879025949
Merge "bug 1221203 Fixes Wadl file and adds more description to role."
Merge "Removes API Programming guide due to being outdated"