unused eventsToAddToInnerQueue in _performSmallStep

[mattoshry]

eventsToAddToInnerQueue is created on line 728. AFAIK, nothing is ever added to the set before we get to 801.

[1]

SCION-CORE/lib/scion.js

Line 728 in 07e2a1e

var eventsToAddToInnerQueue = new this.opts.Set();

[2]

SCION-CORE/lib/scion.js

Line 801 in 07e2a1e

if (!eventsToAddToInnerQueue.isEmpty()) {