Remove ZoneInfo usage

[benmccann]

It's used here:

src/main/java/com/zavtech/morpheus/array/ArrayType.java:            typeMap.put(sun.util.calendar.ZoneInfo.class, TIME_ZONE);

It's generally considered a best practice to avoid using anything from the sun.* package. E.g. see https://stackoverflow.com/a/1835670

I'm not quite sure whether it'd be possible to remove somehow. ArrayBuilderTests.testWithTimeZones tests this functionality and requires the line to be present, but perhaps we could implement some other way?