Corrected tests for Inference model according to refactoring.
Corrected tests for Inference model according to refactoring.

yashu-seth/pgmpy,khalibartan/pgmpy,khalibartan/pgmpy,abinashpanda/pgmpy,sandeepkrjha/pgmpy,kris-singh/pgmpy,liquidmetal/pgmpy,kislayabhi/pgmpy,vivek425ster/pgmpy,ankurankan/pgmpy,palashahuja/pgmpy,jhonatanoliveira/pgmpy,sandeepkrjha/pgmpy,ankurankan/pgmpy,pratyakshs/pgmpy,anaviltripathi/pgmpy,palashahuja/pgmpy,vivek425ster/pgmpy,kislayabhi/pgmpy,pgmpy/pgmpy,kris-singh/pgmpy,abinashpanda/pgmpy,jhonatanoliveira/pgmpy,pgmpy/pgmpy,liquidmetal/pgmpy,anaviltripathi/pgmpy,yashu-seth/pgmpy,pratyakshs/pgmpy