Remove unnecessary printing

Author: YingboMa

NEWS.md

@@ -7,6 +7,7 @@
       + `unknown_states` is now `solved_unknowns`.
       + `get_states` is `get_unknowns`.
       + `get_unknown_states` is now `get_solved_unknowns`.
+
   - The default backend for using units in models is now `DynamicQuantities.jl` instead of
     `Unitful.jl`.
   - ModelingToolkit.jl now exports common definitions of `t` (time independent variable)

src/systems/abstractsystem.jl

@@ -1398,7 +1398,6 @@ macro mtkbuild(exprs...)
     else
         (;)
     end
-    @show kwargs
     esc(quote
         $named_expr
         $name = $structural_simplify($name; $(kwargs)...)