dev-manual, yocto-project-qs: Dropped Python 2.6 as a requirement

Fixes [YOCTO #7535]

Removed this from two places.

(From yocto-docs rev: d169ce99610745e8c1b4b53d898f526e557af665)

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/dev-manual/dev-manual-start.xml

@@ -72,7 +72,7 @@
                 You should also have about 50 Gbytes of free disk space for building images.
                 </para></listitem>
             <listitem><para><emphasis>Packages:</emphasis>  The OpenEmbedded build system
-                requires that certain packages exist on your development system (e.g. Python 2.6 or 2.7).
+                requires that certain packages exist on your development system (e.g. Python 2.7).
                 See "<ulink url='&YOCTO_DOCS_QS_URL;#packages'>The Packages</ulink>"
                 section in the Yocto Project Quick Start and the
                 "<ulink url='&YOCTO_DOCS_REF_URL;#required-packages-for-the-host-development-system'>Required Packages for the Host Development System</ulink>"

documentation/yocto-project-qs/yocto-project-qs.xml

@@ -571,7 +571,7 @@
      $ bitbake -k core-image-sato
             </literallayout>
             <note>
-                BitBake requires Python 2.6 or 2.7.  For more information on
+                BitBake requires Python 2.7.  For more information on
                 this requirement, see the
                 "<ulink url='&YOCTO_DOCS_REF_URL;#required-git-tar-and-python-versions'>Required Git, tar, and Python</ulink>"
                 section in the Yocto Project Reference Manual.