CoreConceptsPy/examples/networks/karate.py: clean up imports
CoreConceptsPy/examples/networks/karate.py: clean up imports

liangcun/ConceptsOfSpatialInformation,liangcun/ConceptsOfSpatialInformation,liangcun/ConceptsOfSpatialInformation,spatial-ucsb/ConceptsOfSpatialInformation,spatial-ucsb/ConceptsOfSpatialInformation,spatial-ucsb/ConceptsOfSpatialInformation