The function has been unused from outside of e2e framework at all since 30b3472f89 which added the function. This removes it for code cleanup.
30b3472f89
Signed-off-by: clarklee92 <clarklee1992@hotmail.com>
This continues the work in https://github.com/kubernetes/kubernetes/pull/81426 by also moving the logger_test.go, moving the log helper code from util.go to log.go (a more logical place, as it is only used there) and updating comments.