Remove mathplugin hack from link server

bam/templates/link_lock.xlmap

@@ -5,10 +5,6 @@
     <redirectedRegister name="status${target[0]}">
       <targetDevice>LINK_${target[1]}</targetDevice>
       <targetRegister>LSU.${LINK_LOCK_NUMBER[STATION]}.LOCK_STATUS.VALUE.RD</targetRegister>
-      <!-- Re-mapping for for new flag meaning: 0 = ok, > 0 = failure -->
-      <plugin name="math">
-        <parameter name="formula">if ([x] > 0) return [0]; else return [1];</parameter>
-      </plugin>
     </redirectedRegister>
 %endfor
   </module>