[master] remove TODO

This TODO was handled a few minutes ago.

doc/guide/bind10-guide.xml

@@ -59,8 +59,6 @@
     <section id="acknowledgements">
       <title>Acknowledgements</title>
 
-<!-- TODO: acknowledge all sponsors and CNNIC and CZNIC too -->
-
       <para>BIND 10 is a sponsored development project, and would not
       be possible without the generous support of the sponsors.</para>