A+C: delete AUTHORS and CONTRIBUTORS

In 2009, Google's open-source lawyers asked us to create the AUTHORS
file to define "The Go Authors", and the CONTRIBUTORS file was in
keeping with open source best practices of the time.

Re-reviewing our repos now in 2022, the open-source lawyers are
comfortable with source control history taking the place of the
AUTHORS file, and most open source projects no longer maintain
CONTRIBUTORS files.

To ease maintenance, remove AUTHORS and CONTRIBUTORS from all repos.

For #53961.

Change-Id: I526d9561b189d1b774c7cf098ee93bef3d4b6296
Reviewed-on: https://go-review.googlesource.com/c/gollvm/+/419098
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
diff --git a/AUTHORS b/AUTHORS
deleted file mode 100644
index ef4696b..0000000
--- a/AUTHORS
+++ /dev/null
@@ -1,11 +0,0 @@
-# This is the official list of gollvm authors for copyright
-# purposes.  This file is distinct from the CONTRIBUTORS files.
-# See the latter for an explanation.
-
-# Names should be added to this file as
-#	Name or Organization <email address>
-# The email address is not required for organizations.
-
-# Please keep the list sorted.
-
-Google Inc.
diff --git a/CONTRIBUTORS b/CONTRIBUTORS
deleted file mode 100644
index f5b288b..0000000
--- a/CONTRIBUTORS
+++ /dev/null
@@ -1,36 +0,0 @@
-# This is the official list of people who can contribute
-# (and typically have contributed) code to the Go frontend
-# repository.  The AUTHORS file lists the copyright holders; this file
-# lists people.  For example, Google employees are listed here
-# but not in AUTHORS, because Google holds the copyright.
-#
-# The submission process automatically checks to make sure
-# that people submitting code are listed in this file (by email address).
-#
-# Names should be added to this file only after verifying that
-# the individual or the individual's organization has agreed to
-# the appropriate Contributor License Agreement, found here:
-#
-#     http://code.google.com/legal/individual-cla-v1.0.html
-#     http://code.google.com/legal/corporate-cla-v1.0.html
-#
-# The agreement for individuals can be filled out on the web.
-#
-# When adding J Random Contributor's name to this file,
-# either J's name or J's organization's name should be
-# added to the AUTHORS file, depending on whether the
-# individual or corporate CLA was used.
-
-# Names should be added to this file like so:
-#     Name <email address>
-
-# Please keep the list sorted.
-
-Aaqa Ishtyaq <aaqaishtyaq@gmail.com>
-Cherry Mui <cherryyz@google.com>
-Eric Fang <eric.fang@arm.com>
-Ian Lance Taylor <iant@golang.org>
-Ivan Serdyuk <local.tourist.kiev@gmail.com>
-Than McIntosh <thanm@google.com>
-Ting Yuan <yuanting@ict.ac.cn>
-Xiangdong Ji <xiangdong.ji@arm.com>