fixed errors in ode_check and removed arg functions 
fixed errors in ode_check and removed arg functions 

cgranade/qutip,qutip/qutip,qutip/qutip,cgranade/qutip,anubhavvardhan/qutip,zasdfgbnm/qutip,zasdfgbnm/qutip,anubhavvardhan/qutip