These functions are not necessary and are not called anywhere.

Change-Id: I1c0d814ba3044c27e3626ac9e6052d8154140404
Reviewed-on: https://go-review.googlesource.com/c/go/+/201697
Run-TryBot: Michael Munday <mike.munday@ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>