Remove unbound methods from modules

vm/src/obj/objfunction.rs

@@ -64,24 +64,11 @@ pub struct PyMethod {
     // TODO: these shouldn't be public
     pub object: PyObjectRef,
     pub function: PyObjectRef,
-    pub actually_bind: bool,
 }
 
 impl PyMethod {
     pub fn new(object: PyObjectRef, function: PyObjectRef) -> Self {
-        PyMethod {
-            object,
-            function,
-            actually_bind: true,
-        }
-    }
-
-    pub fn new_nobind(object: PyObjectRef, function: PyObjectRef) -> Self {
-        PyMethod {
-            object,
-            function,
-            actually_bind: false,
-        }
+        PyMethod { object, function }
     }
 
     fn getattribute(&self, name: PyStringRef, vm: &VirtualMachine) -> PyResult {

vm/src/vm.rs

@@ -664,14 +664,9 @@ impl VirtualMachine {
         } else if let Some(PyMethod {
             ref function,
             ref object,
-            actually_bind,
         }) = func_ref.payload()
         {
-            let args = if *actually_bind {
-                args.insert(object.clone())
-            } else {
-                args
-            };
+            let args = args.insert(object.clone());
             self.invoke(&function, args)
         } else if let Some(builtin_func) = func_ref.payload::<PyBuiltinFunction>() {
             builtin_func.as_func()(self, args)
@@ -1450,16 +1445,6 @@ impl VirtualMachine {
         attr_value: impl Into<PyObjectRef>,
     ) -> PyResult<()> {
         let val = attr_value.into();
-        let val = if val
-            .class()
-            .is(&self.ctx.types.builtin_function_or_method_type)
-        {
-            PyMethod::new_nobind(module.clone(), val)
-                .into_ref(self)
-                .into_object()
-        } else {
-            val
-        };
         self.set_attr(module, attr_name, val)?;
         Ok(())
     }