fpdoc: clean up

utils/fpdoc/fpdoc.lpi

@@ -160,9 +160,6 @@
     <Other>
       <CustomOptions Value="-dCheckPasTreeRefCountx
 -dDebugRefCountx"/>
-      <OtherDefines Count="1">
-        <Define0 Value="CheckPasTreeRefCount"/>
-      </OtherDefines>
     </Other>
   </CompilerOptions>
   <Debugging>