[PATCH] SubmittingPatches: Remove diff tool examples

[Sverre Rabbelier <srabbelier@gmail.com>]

Since Cogito is long deprecated, it is somewhat awkward to leave it
as example. Removing Cogito leaves just git and StGit, which is a
rather incomplete list of git diff tools available. Sidestep the
problem of deciding what tools to mention by not mentioning any.

Signed-off-by: Sverre Rabbelier <srabbelier@gmail.com>
---

  This uses the subject Ramkumar suggested. Since the subject no
  longer references Cogito, I've added a reference to the reason
  for this removal as the first line of the description.

 Documentation/SubmittingPatches |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/Documentation/SubmittingPatches b/Documentation/SubmittingPatches
index 938eccf..0dbf2c9 100644
--- a/Documentation/SubmittingPatches
+++ b/Documentation/SubmittingPatches
@@ -134,8 +134,7 @@ Another thing: NULL pointers shall be written as NULL, not as 0.
 
 (2) Generate your patch using git tools out of your commits.
 
-git based diff tools (git, Cogito, and StGIT included) generate
-unidiff which is the preferred format.
+git based diff tools generate unidiff which is the preferred format.
 
 You do not have to be afraid to use -M option to "git diff" or
 "git format-patch", if your patch involves file renames.  The
-- 
1.7.6.1.724.g9519c