run.bash: drop 'export GOROOT' and its obsolete comment

The comment justifies exporting GOROOT by saying the api test needs it,
which was relevant back when it was added in CL 99870043, but isn't true
by now.

As of Go 1.8, GOPATH can be unset (https://go.dev/doc/go1.8#gopath).
At some point it also became okay to leave GOROOT unset, at least
whenever one is looking to use the default GOROOT tree of the go command
being executed and not intentionally changing it to a custom directory.

It's also not there in the .bat and .rc variants of this script.
Drop it.

Change-Id: Ibcb386c560523fcfbfec8020f90692dcfa5aa686
Reviewed-on: https://go-review.googlesource.com/c/go/+/480376
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>

diff --git a/src/run.bash b/src/run.bash
index 6274df6fb3255dd450812d43c98c77b5a1cd471f..badb8c60e20f087462eb15b537150e0fee6d1656 100755 (executable)
--- a/src/run.bash
+++ b/src/run.bash
@@ -31,7 +31,6 @@ fi
 
 export GOENV=off
 eval $(../bin/go tool dist env)
-export GOROOT   # The api test requires GOROOT to be set, so set it to match ../bin/go.
 
 unset CDPATH   # in case user has it set