5.3 release

Author: yuanho

auxdata/docs/userguide/content/ReleaseNotes.html

@@ -18,13 +18,6 @@
 <faqitem cat="System Changes"></faqitem>
 
 
-<faqitem q="DOI" id="doi">
-  <p>
-    For improved citation purposes, the IDV now has a Digital Object Identifier
-    (DOI): doi:10.5065/D6RN35XM.
-  </p>
-</faqitem>
-
 <faqitem q="Latest netCDF-Java Version" id="nj465">
   <p>
     The version of the netCDF-Java library currently distributed with the IDV is