Merge pull request #1313 from SciML/YingboMa-patch-1

stop importing unflatten_long_ops

Author: YingboMa

src/ModelingToolkit.jl

@@ -50,7 +50,7 @@ import Symbolics: rename, get_variables!, _solve, hessian_sparsity,
                   tosymbol, lower_varname, diff2term, var_from_nested_derivative,
                   BuildTargets, JuliaTarget, StanTarget, CTarget, MATLABTarget,
                   ParallelForm, SerialForm, MultithreadedForm, build_function,
-                  unflatten_long_ops, rhss, lhss, prettify_expr, gradient,
+                  rhss, lhss, prettify_expr, gradient,
                   jacobian, hessian, derivative, sparsejacobian, sparsehessian,
                   substituter, scalarize, getparent