LICENSE: update per Google Legal

Very minor tweaks:
 - Remove (c) pseudosymbol.
 - Remove "All Rights Reserved."
 - Change "Google Inc." (no longer exists) to "Google LLC".

[git-generate]
echo '
,s/\(c\) //
,s/ All rights reserved.//
,s/Google Inc./Google LLC/
w
q
' | sam -d LICENSE

Change-Id: I9d9b10b2aa09bc97a3f8a072908181e5930f86aa
Reviewed-on: https://go-review.googlesource.com/c/xerrors/+/598591
Commit-Queue: Russ Cox <rsc@golang.org>
Auto-Submit: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Bypass: Russ Cox <rsc@golang.org>
1 file changed