[Matlab] Fix clear(Reactor) to delete the reactor instead of copying
[Matlab] Fix clear(Reactor) to delete the reactor instead of copying

imitrichev/cantera,Heathckliff/cantera,Heathckliff/cantera,Heathckliff/cantera,Heathckliff/cantera,Heathckliff/cantera,imitrichev/cantera,Heathckliff/cantera,imitrichev/cantera,imitrichev/cantera,imitrichev/cantera,imitrichev/cantera