Apply suggestions from code review

Co-authored-by: Dmitry Kalinkin <[email protected]>

Author: wdconinc

compact/tracking/definitions.xml

@@ -179,7 +179,6 @@
     </plugin>
   </plugins>
   <define>
-    <constant name="materials-map" value="calibrations/material-map-brycecanyon.cbor" type="string"/><!-- EICrecon older than 1.6.0 -->
     <constant name="material-map" value="calibrations/material-map-brycecanyon.cbor" type="string"/>
   </define>
 

compact/tracking/definitions_arches.xml

@@ -185,7 +185,6 @@
     </plugin>
   </plugins>
   <define>
-    <constant name="materials-map" value="calibrations/material-map-arches.cbor" type="string"/><!-- EICrecon older than 1.6.0 -->
     <constant name="material-map" value="calibrations/material-map-arches.cbor" type="string"/>
   </define>
 

compact/tracking/definitions_craterlake.xml

@@ -200,7 +200,6 @@
     </plugin>
   </plugins>
   <define>
-    <constant name="materials-map" value="calibrations/material-map-craterlake.cbor" type="string"/><!-- EICrecon older than 1.6.0 -->
     <constant name="material-map" value="calibrations/material-map-craterlake.cbor" type="string"/>
   </define>