ENH: ignore -noFunctionObjects option when disabled

- With argList::noFunctionObjects() we use the logic added in
  4b93333292 (issue #352)

  By removing the '-noFunctionObjects' option, we automatically
  suppress the creation of function-objects via Time (with argList
  as a parameter).
  There is generally no need in these cases for an additional

      runTime.functionObjects().off()  statement

  Use the argList::noFunctionObjects() for more direct configuration
  and reduce unnecessary clutter in the -help information.

  In previous versions, the -noFunctionObjects would have been redundant
  anyhow, so we can also just ignore it now instead.

applications/utilities/postProcessing/lumped/lumpedPointZones/lumpedPointZones.C

@@ -49,9 +49,10 @@ int main(int argc, char *argv[])
         "Create lumpedPointZones.vtp to verify the segmentation of "
         "pressure integration zones used by lumpedPoint BC."
     );
-    argList::noParallel();    // The VTP writer is not yet in parallel
 
+    argList::noParallel();    // The VTP writer is not yet in parallel
     argList::noFunctionObjects();  // Never use function objects
+
     argList::addBoolOption
     (
         "verbose",