arm64: Drop outdated links in comments

As started by commit 05a5f51c ("Documentation: Replace lkml.org links
with lore"), an effort was made to replace lkml.org links with lore to
better use a single source that's more likely to stay available long-term.
However, it seems these links don't offer much value here, so just
remove them entirely.

Cc: Joe Perches <joe@perches.com>
Suggested-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/lkml/20210211100213.GA29813@willie-the-truck/Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20211215191835.1420010-1-keescook@chromium.org
[catalin.marinas@arm.com: removed the arch/arm changes]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

arch/arm64/kernel/hibernate.c

@@ -7,10 +7,6 @@
  * Ubuntu project, hibernation support for mach-dove
  * Copyright (C) 2010 Nokia Corporation (Hiroshi Doyu)
  * Copyright (C) 2010 Texas Instruments, Inc. (Teerth Reddy et al.)
- *  https://lkml.org/lkml/2010/6/18/4
- *  https://lists.linux-foundation.org/pipermail/linux-pm/2010-June/027422.html
- *  https://patchwork.kernel.org/patch/96442/
- *
  * Copyright (C) 2006 Rafael J. Wysocki <rjw@sisk.pl>
  */
 #define pr_fmt(x) "hibernate: " x