removed http2 types to ensure compatibility with node < v8
removed http2 types to ensure compatibility with node < v8

markogresak/DefinitelyTyped,georgemarshall/DefinitelyTyped,magny/DefinitelyTyped,georgemarshall/DefinitelyTyped,AgentME/DefinitelyTyped,AgentME/DefinitelyTyped,georgemarshall/DefinitelyTyped,AgentME/DefinitelyTyped,dsebastien/DefinitelyTyped,AgentME/DefinitelyTyped,georgemarshall/DefinitelyTyped,dsebastien/DefinitelyTyped,mcliment/DefinitelyTyped,magny/DefinitelyTyped,borisyankov/DefinitelyTyped,borisyankov/DefinitelyTyped