This plugin fully disables XML-RPC support (Remote publishing, trackbacks, jetpack, whatnot) by deactivating all the registered methods (In more modern terminology they are equivalent to end point in REST type of API).
A client application can still send XML-RPC messages to the server but it will get a response similar to “I Have no idea what you are asking me to do”
Current version
1.1
Supported wordpress versions
3.5 and above
Network compatibility
Can be network activated or dropped into the mu-plugins directory
Localization
There is nothing to localize