refactor: remove `ode_order_lowering` and `dae_order_lowering`#3644

ChrisRackauckas merged 1 commit intoSciML:v10SciML/ModelingToolkit.jl:v10from

AayushSabharwal:as/rm-order-loweringAayushSabharwal/ModelingToolkit.jl:as/rm-order-loweringCopy head branch name to clipboard