Drop all 00-INDEX files from Documentation/

This is a respin with a wider audience (all that get_maintainer returned)
and I know this spams a *lot* of people. Not sure what would be the correct
way, so my apologies for ruining your inbox.

The 00-INDEX files are supposed to give a summary of all files present
in a directory, but these files are horribly out of date and their
usefulness is brought into question. Often a simple "ls" would reveal
the same information as the filenames are generally quite descriptive as
a short introduction to what the file covers (it should not surprise
anyone what Documentation/sched/sched-design-CFS.txt covers)

A few years back it was mentioned that these files were no longer really
needed, and they have since then grown further out of date, so perhaps
it is time to just throw them out.

A short status yields the following _outdated_ 00-INDEX files, first
counter is files listed in 00-INDEX but missing in the directory, last
is files present but not listed in 00-INDEX.

List of outdated 00-INDEX:
Documentation: (4/10)
Documentation/sysctl: (0/1)
Documentation/timers: (1/0)
Documentation/blockdev: (3/1)
Documentation/w1/slaves: (0/1)
Documentation/locking: (0/1)
Documentation/devicetree: (0/5)
Documentation/power: (1/1)
Documentation/powerpc: (0/5)
Documentation/arm: (1/0)
Documentation/x86: (0/9)
Documentation/x86/x86_64: (1/1)
Documentation/scsi: (4/4)
Documentation/filesystems: (2/9)
Documentation/filesystems/nfs: (0/2)
Documentation/cgroup-v1: (0/2)
Documentation/kbuild: (0/4)
Documentation/spi: (1/0)
Documentation/virtual/kvm: (1/0)
Documentation/scheduler: (0/2)
Documentation/fb: (0/1)
Documentation/block: (0/1)
Documentation/networking: (6/37)
Documentation/vm: (1/3)

Then there are 364 subdirectories in Documentation/ with several files that
are missing 00-INDEX alltogether (and another 120 with a single file and no
00-INDEX).

I don't really have an opinion to whether or not we /should/ have 00-INDEX,
but the above 00-INDEX should either be removed or be kept up to date. If
we should keep the files, I can try to keep them updated, but I rather not
if we just want to delete them anyway.

As a starting point, remove all index-files and references to 00-INDEX and
see where the discussion is going.

Signed-off-by: Henrik Austad <henrik@austad.us>
Acked-by: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Just-do-it-by: Steven Rostedt <rostedt@goodmis.org>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Paul Moore <paul@paul-moore.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: [Almost everybody else]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/RCU/00-INDEX

@@ -1,34 +0,0 @@
-00-INDEX
-	- This file
-arrayRCU.txt
-	- Using RCU to Protect Read-Mostly Arrays
-checklist.txt
-	- Review Checklist for RCU Patches
-listRCU.txt
-	- Using RCU to Protect Read-Mostly Linked Lists
-lockdep.txt
-	- RCU and lockdep checking
-lockdep-splat.txt
-	- RCU Lockdep splats explained.
-NMI-RCU.txt
-	- Using RCU to Protect Dynamic NMI Handlers
-rcu_dereference.txt
-	- Proper care and feeding of return values from rcu_dereference()
-rcubarrier.txt
-	- RCU and Unloadable Modules
-rculist_nulls.txt
-	- RCU list primitives for use with SLAB_TYPESAFE_BY_RCU
-rcuref.txt
-	- Reference-count design for elements of lists/arrays protected by RCU
-rcu.txt
-	- RCU Concepts
-RTFP.txt
-	- List of RCU papers (bibliography) going back to 1980.
-stallwarn.txt
-	- RCU CPU stall warnings (module parameter rcu_cpu_stall_suppress)
-torture.txt
-	- RCU Torture Test Operation (CONFIG_RCU_TORTURE_TEST)
-UP.txt
-	- RCU on Uniprocessor Systems
-whatisRCU.txt
-	- What is RCU?

Documentation/RCU/rcu.txt

@@ -87,7 +87,3 @@ o	Where can I find more information on RCU?
 
 	See the RTFP.txt file in this directory.
 	Or point your browser at http://www.rdrop.com/users/paulmck/RCU/.
-
-o	What are all these files in this directory?
-
-	See 00-INDEX for the list.