Removed layer and piece and Added sector in readout

compact/ce_mrich.xml

@@ -13,7 +13,7 @@
   <readouts>
     <readout name="MRICHHits">
       <segmentation type="CartesianGridXY" grid_size_x="3*mm" grid_size_y="3*mm" />
-      <id>system:8,layer:4,piece:4,module:14,x:32:-16,y:-16</id>
+      <id>system:8,sector:8,module:14,x:32:-16,y:-16</id>
     </readout>
   </readouts>