Revert "Add search over lambda parameter"

This reverts commit ea4c4d9fe6f623d147e1c2b04f9ce8c7536771e6.

Conflicts:
	demo/bickley_jet/hyperbolic_shear_lcs_details.m
	demo/double_gyre/hyperbolic_shear_lcs_details.m
	demo/ocean_dataset/hyperbolic_shear_lcs_details.m
Remove set_* functions from flow animation demos