[PATCH] CodingGuidelines: specify Python 2.7 is the oldest version

[Denton Liu <liu.denton@gmail.com>]

In 0b4396f068 (git-p4: make python2.7 the oldest supported version,
2019-12-13), git-p4 was updated to only support 2.7 and newer. Since
Python 2.6 is pretty much ancient history, update CodingGuidelines to
show that 2.7 is the oldest version supported.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
---

Notes:
    This patch is somewhat conservative. Python 2.7 has been EOL'd (although
    it's still in common use). Would it make sense, instead, to say that
    Python 3.x (the earliest non-EOL'd version) is the minimum version we
    support and it would be _nice_ to support 2.7 as well?
    
    On the topic of Python 3.x, 3.1 has been EOL'd since 2012. Would it make
    sense to update this version to 3.5 which is the earliest supported
    version of Python?

 Documentation/CodingGuidelines | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/Documentation/CodingGuidelines b/Documentation/CodingGuidelines
index 227f46ae40..45465bc0c9 100644
--- a/Documentation/CodingGuidelines
+++ b/Documentation/CodingGuidelines
@@ -489,16 +489,11 @@ For Python scripts:
 
  - We follow PEP-8 (http://www.python.org/dev/peps/pep-0008/).
 
- - As a minimum, we aim to be compatible with Python 2.6 and 2.7.
+ - As a minimum, we aim to be compatible with Python 2.7.
 
  - Where required libraries do not restrict us to Python 2, we try to
    also be compatible with Python 3.1 and later.
 
- - When you must differentiate between Unicode literals and byte string
-   literals, it is OK to use the 'b' prefix.  Even though the Python
-   documentation for version 2.6 does not mention this prefix, it has
-   been supported since version 2.6.0.
-
 Error Messages
 
  - Do not end error messages with a full stop.
-- 
2.27.0.107.g134631ef42