Reduce diff on aliases

Author: sffc

common/supplemental/supplementalData.xml

@@ -4640,12 +4640,12 @@ XXX Code for transations where no currency is involved
         </calendar>
         <calendar type="indian">
           <eras>
-              <era type="0" start="79-03-22" code="shaka" aliases="saka"/>
+              <era type="0" start="79-03-22" code="shaka"/>
           </eras>
         </calendar>
         <calendar type="roc">
           <eras>
-              <era type="0" end="1911-12-31" code="broc" aliases="minguo-qian before-roc"/>
+              <era type="0" end="1911-12-31" code="broc" aliases="before-roc"/>
               <era type="1" start="1912-01-01" code="roc" aliases="minguo"/>
           </eras>
         </calendar>