remove debugging warning (#486)

I can't see a reason for the warning here so believe it's a debugging statement that crept in?

src/replay/machine.ts

@@ -165,7 +165,6 @@ export function createPlayerService(
           };
         }),
         play(ctx) {
-          console.warn('play');
           const { timer, events, baselineTime, lastPlayedEvent } = ctx;
           timer.clear();
           for (const event of events) {