code: public void removeFilter(String filterName)
     {
        Filter filter = getFilterByName(filterName);
        if (filter != null)
        {
           if (filter.isTaskFilter())
           {
              m_taskFilters.remove(filter);
           }
  
           if (filter.isResourceFilter())
           {
              m_resourceFilters.remove(filter);
           }
           m_filtersByName.remove(filterName);
           m_filtersByID.remove(filter.getID());
        }
     }
docs: Removes a filter from this project file.
  
  @param filterName The name of the filter