message: remove distracting referenced by lists in doxygen
diff: @@ -1012,7 +1012,7 @@ STRIP_CODE_COMMENTS = NO
  # function all documented functions referencing it will be listed.
  # The default value is: NO.
  -REFERENCED_BY_RELATION = YES
  +REFERENCED_BY_RELATION = NO
  # If the REFERENCES_RELATION tag is set to YES then for each documented function
  # all documented entities called/used by that function will be listed.
  