docs: Use MIT for documentation license

doc/publican/sources/Book_Info.xml

@@ -34,6 +34,38 @@
       </textobject>
     </inlinemediaobject>
   </corpauthor>
-  <xi:include href="Common_Content/Legal_Notice.xml" xmlns:xi="http://www.w3.org/2001/XInclude" />
+
+  <legalnotice lang="en-US">
+    <para>
+      Copyright <trademark class="copyright"></trademark> &YEAR; &HOLDER;
+    </para>
+
+    <para>
+      Permission to use, copy, modify, distribute, and sell this
+      software and its documentation for any purpose is hereby granted
+      without fee, provided that the above copyright notice appear in
+      all copies and that both that copyright notice and this
+      permission notice appear in supporting documentation, and that
+      the name of the copyright holders not be used in advertising or
+      publicity pertaining to distribution of the software without
+      specific, written prior permission.  The copyright holders make
+      no representations about the suitability of this software for
+      any purpose.  It is provided "as is" without express or implied
+      warranty.
+    </para>
+
+    <para>
+      THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO
+      THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
+      MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL THE COPYRIGHT
+      HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
+      DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+      DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+      OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE
+      USE OR PERFORMANCE OF THIS SOFTWARE.
+    </para>
+  </legalnotice>
+
+
   <xi:include href="Author_Group.xml" xmlns:xi="http://www.w3.org/2001/XInclude" />
 </bookinfo>