remove unused length param

src/include/wren.h

@@ -78,7 +78,6 @@ typedef void (*WrenLoadModuleCompleteFn)(WrenVM* vm, const char* name, WrenLoadM
 // [onComplete] an optional callback that will be called once Wren is done with the result.
 typedef struct WrenLoadModuleResult
 {
-  long long length;
   const char* source;
   WrenLoadModuleCompleteFn onComplete;
   void* userData;

src/vm/wren_vm.c

@@ -713,7 +713,6 @@ static Value importModule(WrenVM* vm, Value name)
   // If the host didn't provide it, see if it's a built in optional module.
   if (result.source == NULL)
   {
-    result.length = 0;
     result.onComplete = NULL;
     ObjString* nameString = AS_STRING(name);
 #if WREN_OPT_META