Remove integration tests creating statuses

[BenFradet]

This is causing the current builds to fail as we've recently reached the limit of 1k statuses for the commit sha we use to create statuses in the integration tests.

[codecov-io]

Codecov Report

Merging #128 into master will decrease coverage by 0.56%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #128      +/-   ##
==========================================
- Coverage   89.01%   88.44%   -0.57%     
==========================================
  Files          38       38              
  Lines         528      528              
  Branches        2        2              
==========================================
- Hits          470      467       -3     
- Misses         58       61       +3

Impacted Files	Coverage Δ
...c/main/scala/github4s/free/algebra/StatusOps.scala	60% <0%> (-40%)	⬇️
...cala/github4s/free/interpreters/Interpreters.scala	83.58% <0%> (-1.5%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update db60312...71f2773. Read the comment docs.

[fedefernandez]

LGTM! Thanks