MM-23574: Remove Segment. (#14712)

* MM-23574: Eliminate Segment.

* Update dependencies.

* Fix review suggestions.

go.mod

@@ -92,7 +92,6 @@ require (
 	github.com/rudderlabs/analytics-go v3.2.1+incompatible
 	github.com/russellhaering/goxmldsig v0.0.0-20180430223755-7acd5e4a6ef7
 	github.com/rwcarlsen/goexif v0.0.0-20190401172101-9e8deecbddbd
-	github.com/segmentio/analytics-go v3.1.0+incompatible
 	github.com/segmentio/backo-go v0.0.0-20200129164019-23eae7c10bd3 // indirect
 	github.com/sirupsen/logrus v1.5.0
 	github.com/smartystreets/assertions v1.0.0 // indirect