Remove all aliases except ce/ad and bc/bce

Author: sffc

common/supplemental/supplementalData.xml

@@ -4629,13 +4629,13 @@ XXX Code for transations where no currency is involved
         <calendar type="ethiopic">
           <calendarSystem type="other"/>
           <eras>
-              <era type="0" start="-5492-07-17" code="aa" aliases="mundi"/> <!-- Amete Alem -->
-              <era type="1" start="8-08-27" code="am" aliases="incar"/> <!-- Amete Mihret -->
+              <era type="0" start="-5492-07-17" code="aa"/> <!-- Amete Alem -->
+              <era type="1" start="8-08-27" code="am"/> <!-- Amete Mihret -->
           </eras>
         </calendar>
         <calendar type="ethiopic-amete-alem">
           <eras>
-              <era type="0" start="-5492-07-17" code="aa" aliases="mundi"/> <!-- Amete Alem -->
+              <era type="0" start="-5492-07-17" code="aa"/> <!-- Amete Alem -->
           </eras>
         </calendar>
         <calendar type="indian">
@@ -4645,8 +4645,8 @@ XXX Code for transations where no currency is involved
         </calendar>
         <calendar type="roc">
           <eras>
-              <era type="0" end="1911-12-31" code="broc" aliases="before-roc"/>
-              <era type="1" start="1912-01-01" code="roc" aliases="minguo"/>
+              <era type="0" end="1911-12-31" code="broc"/>
+              <era type="1" start="1912-01-01" code="roc"/>
           </eras>
         </calendar>