removed useless auxiliary variables from call to kalman_transition_matrix()

matlab/UnivariateSpectralDensity.m

matlab/display_conditional_variance_decomposition.m

...imulated_theoretical_conditional_variance_decomposition.m

matlab/forcst.m

matlab/get_variance_of_endogenous_variables.m

matlab/kalman_transition_matrix.m

matlab/simultxdet.m

matlab/th_autocovariances.m