misc: delete benchcmp forwarding script

benchcmp was moved out of misc into x/tools in CL 60100043 in 2014,
and then replaced by a forwarding script in CL 82710043.
Five years have since passed, and the forwarding script has outlived
its usefulness. It's now more confusing than helpful. Delete it.

Change-Id: I8c7d65b97e0b3fe367df69a86ae10c7960c05be3
Reviewed-on: https://go-review.googlesource.com/c/go/+/202762
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

diff --git a/misc/benchcmp b/misc/benchcmp
deleted file mode 100755 (executable)
index 84d92ee..0000000
--- a/misc/benchcmp
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/bin/bash
-
-echo 'misc/benchcmp has moved:' >&2
-echo ' go get -u golang.org/x/tools/cmd/benchcmp' >&2
-exit 2