dev-manual: Updated simple build flow, text and diagram

Now that we have CROPS as an option, the step for preparing
your build host is condenced to include cloning poky.  This
resulted in removal of step 2 and updating of the figure.

(From yocto-docs rev: 903d1f98b736a744de1d9c973f7a96b6a92049b5)

Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

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

@@ -919,23 +919,15 @@
 
     <para>
         The following figure and list overviews the build process:
-        <imagedata fileref="figures/bitbake-build-flow.png" width="7in" depth="6in" align="center" scalefit="1" />
+        <imagedata fileref="figures/bitbake-build-flow.png" width="7in" depth="4in" align="center" scalefit="1" />
         <orderedlist>
             <listitem><para>
-                <emphasis>Set Up Your Host Development System to Support
-                Development Using the Yocto Project:</emphasis>
+                <emphasis>Set up Your Host Development System to Support
+                Development Using the Yocto Project</emphasis>:
                 See the
-                "<ulink url='&YOCTO_DOCS_QS_URL;#the-linux-distro'>The Linux Distribution</ulink>"
-                and the
-                "<ulink url='&YOCTO_DOCS_QS_URL;#packages'>The Build Host Packages</ulink>"
-                sections both in the Yocto Project Quick Start for
-                build host requirements.
-                </para></listitem>
-            <listitem><para>
-                <emphasis>Set Up Your Source Directories:</emphasis>
-                Make sure you have set up the Source Directory described in the
-                "<link linkend='cloning-the-poky-repository'>Cloning the <filename>poky</filename> Repository</link>"
-                section.
+                "<ulink url='&YOCTO_DOCS_QS_URL;#yp-resources'>Setting Up to Use the Yocto Project</ulink>"
+                section in the Yocto Project Quick Start for options on how
+                to get a build host ready to use the Yocto Project.
                 </para></listitem>
             <listitem><para>
                 <emphasis>Initialize the Build Environment:</emphasis>