This is one of the simplifications that "gofmt -s" applies.
https://golang.org/cmd/gofmt/#hdr-The_simplify_command
A slice expression of the form:
s[a:len(s)]
will be simplified to:
s[a:]
Updates golang/go#37221
Change-Id: Ibd4dedaadc9b129d5d39524f0c1ccc8a95bf7e0d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/223659
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
