Disable dub from checking internet before building

[0xFFFFFFFF]

On Monday, 25 February 2019 at 18:54:03 UTC, Jacob Carlborg wrote:
> On 2019-02-24 23:51, 0xFFFFFFFF wrote:
>> How to disable dub from checking internet before building, 
>> it's slowing down build whenever it does this.
>
> I thought that was fixed [1]. Or is it doing something else?
>
> [1] https://dlang.org/changelog/2.082.0.html#upgrade_check

Time to upgrade then.