Aging &Disease: remove unused macros

Author: adam3smith

aging-and-disease.csl

@@ -16,15 +16,6 @@
     <updated>2019-09-26T09:18:08+00:00</updated>
     <rights license="http://creativecommons.org/licenses/by-sa/3.0/">This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 License</rights>
   </info>
-  <macro name="author-short">
-    <names variable="author">
-      <name form="short" and="text"/>
-      <substitute>
-        <names variable="editor"/>
-        <names variable="translator"/>
-      </substitute>
-    </names>
-  </macro>
   <macro name="author">
     <names variable="author">
       <name sort-separator=" " initialize-with="" name-as-sort-order="all" delimiter=", " delimiter-precedes-last="always"/>
@@ -55,11 +46,6 @@
       </else>
     </choose>
   </macro>
-  <macro name="year">
-    <date variable="issued">
-      <date-part name="year"/>
-    </date>
-  </macro>
   <macro name="title">
     <choose>
       <if type="book">