Remove reference to theckman/godspeed

[xzyfer]

Augment https://github.com/99designs/telemetry/pull/11

[xzyfer]

Can't seem to coax out the github.com/theckman/godspeed v1.1.0 // indirect

[mtibben]

@xzyfer github.com/theckman/godspeed-og still references it

$ go mod why github.com/theckman/godspeed
# github.com/theckman/godspeed
github.com/99designs/telemetry/sink/datadog
github.com/theckman/godspeed-og
github.com/theckman/godspeed-og.test
github.com/theckman/godspeed

[xzyfer]

Cool. Then this go.mod is the expected outcome.