[relay-runtime] Export function types, not values.
[relay-runtime] Export function types, not values.

AgentME/DefinitelyTyped,borisyankov/DefinitelyTyped,markogresak/DefinitelyTyped,magny/DefinitelyTyped,one-pieces/DefinitelyTyped,borisyankov/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,rolandzwaga/DefinitelyTyped,AgentME/DefinitelyTyped,dsebastien/DefinitelyTyped,AgentME/DefinitelyTyped,AgentME/DefinitelyTyped,georgemarshall/DefinitelyTyped,rolandzwaga/DefinitelyTyped,dsebastien/DefinitelyTyped,mcliment/DefinitelyTyped,magny/DefinitelyTyped