don't warn on unresolvable default terms

Author: hexaeder

ext/NetworkDynamicsMTKExt.jl

@@ -222,7 +222,8 @@ function _get_metadata(sys, name)
         end
 
         if def isa Symbolic
-            @warn "Could not resolve rhs for default term $name = $(ModelingToolkit.getdefault(sym)). Some rhs symbols might not have default values. Leave free."
+            # do nothing, as the warning can get annoying
+            # @warn "Could not resolve rhs for default term $name = $(ModelingToolkit.getdefault(sym)). Some rhs symbols might not have default values. Leave free."
         elseif def == ModelingToolkit.NoValue || def isa ModelingToolkit.NoValue
             # skip NoValue thing
         else