Disable running against iOS SDK 5.1 in CI
Disable running against iOS SDK 5.1 in CI

hsienchiaolee/cedar,idoru/cedar,briancroom/cedar,briancroom/cedar,pivotal/cedar,tjarratt/cedar,jasperblues/cedar,tjarratt/cedar,tjarratt/cedar,pivotal/cedar,jeffh/cedar,jeffh/cedar,hsienchiaolee/cedar,tjarratt/cedar,irfanah/cedar,pivotal/cedar,briancroom/cedar,jeffh/cedar,jeffh/cedar,jasperblues/cedar,irfanah/cedar,hsienchiaolee/cedar,jasperblues/cedar,jasperblues/cedar,hsienchiaolee/cedar,briancroom/cedar,irfanah/cedar,irfanah/cedar,jeffh/cedar,idoru/cedar,briancroom/cedar,tjarratt/cedar,idoru/cedar,pivotal/cedar,idoru/cedar,pivotal/cedar,idoru/cedar