Remove unused dependecy

[3vilhamster]

Remove unused dependency to prevent abandoned lyrics/logrus messing with Sirupsen logrus

[3vilhamster]

My reasoning:
In my project we use this package and it works great, but goimport keeps pushing lytics/logrus to imports, because it is first on the list, and it really is not very comfortable, you use gou for test helpers only, so i pulled helper part here, to prevent extra dependencies later on. For now i've moved to my forked version