Remove manual test coverage merging
In the past, go test -cover
was unable to merge coverage results across packages, and we had to use an external tool gocovmerge
for that.
This stopped being necessary 2 years ago: https://go-review.googlesource.com/c/go/+/76875/
This MR removes that old coverage merging code in favor of letting the go
tool do that for us.
Edited by GitLab Release Tools Bot