Removed DateComponents causing memory leaks

[lluuaapp]

@tanner0101: as discussed on the Discord channel this helps to the memory usage.

[lluuaapp]

Seems the linux-fluent test is failing cause a Swift 5.0 dependency?

/root/fluent-mysql: error: package at '/root/fluent-mysql' requires a minimum Swift tools version of 5.0.0 (currently 4.1.0)

[tanner0101]

Seems the linux-fluent test is failing cause a Swift 5.0 dependency?

Yes, fixed this on master.

as discussed on the Discord channel this helps to the memory usage.

I think #232 should be sufficient to fix the memory problem for MySQL 3.x. Given this Date stuff isn't a small change, I'd prefer if we could try implementing this in MySQL 4.x instead.

I'm already using gmtime there for the Swift -> MySQL conversion:

https://github.com/vapor/nio-mysql/blob/master/Sources/NIOMySQL/MySQLTime.swift#L53

Would you be interested in helping update the MySQL -> Swift conversion there?

https://github.com/vapor/nio-mysql/blob/master/Sources/NIOMySQL/MySQLTime.swift#L74-L103

If not, I'll leave this open as a reminder to tackle it before the official tag 👍

[lluuaapp]

OK, I opened a PR here