Removing Travis in prep for adding circle (#58)

Author: ladanazita

.travis.yml

@@ -1,6 +1,5 @@
 # Analytics
 
-[![CI Status](http://img.shields.io/travis/segment-integrations/analytics-ios-integration-amplitude.svg?style=flat)](https://travis-ci.org/segment-integrations/analytics-ios-integration-amplitude)
 [![Version](https://img.shields.io/cocoapods/v/Segment-Amplitude.svg?style=flat)](http://cocoapods.org/pods/Segment-Amplitude)
 [![License](https://img.shields.io/cocoapods/l/Segment-Amplitude.svg?style=flat)](http://cocoapods.org/pods/Segment-Amplitude)