remove some dead PyPy-specific code (#1329)

Author: davidhewitt

src/input/input_python.rs

@@ -653,60 +653,6 @@ fn maybe_as_enum<'py>(v: &Bound<'py, PyAny>) -> Option<Bound<'py, PyAny>> {
     }
 }
 
-#[cfg(PyPy)]
-static DICT_KEYS_TYPE: pyo3::sync::GILOnceCell<Py<PyType>> = pyo3::sync::GILOnceCell::new();
-
-#[cfg(PyPy)]
-fn is_dict_keys_type(v: &Bound<'_, PyAny>) -> bool {
-    let py = v.py();
-    let keys_type = DICT_KEYS_TYPE
-        .get_or_init(py, || {
-            py.eval("type({}.keys())", None, None)
-                .unwrap()
-                .downcast::<PyType>()
-                .unwrap()
-                .into()
-        })
-        .bind(py);
-    v.is_instance(keys_type).unwrap_or(false)
-}
-
-#[cfg(PyPy)]
-static DICT_VALUES_TYPE: pyo3::sync::GILOnceCell<Py<PyType>> = pyo3::sync::GILOnceCell::new();
-
-#[cfg(PyPy)]
-fn is_dict_values_type(v: &Bound<'_, PyAny>) -> bool {
-    let py = v.py();
-    let values_type = DICT_VALUES_TYPE
-        .get_or_init(py, || {
-            py.eval("type({}.values())", None, None)
-                .unwrap()
-                .downcast::<PyType>()
-                .unwrap()
-                .into()
-        })
-        .bind(py);
-    v.is_instance(values_type).unwrap_or(false)
-}
-
-#[cfg(PyPy)]
-static DICT_ITEMS_TYPE: pyo3::sync::GILOnceCell<Py<PyType>> = pyo3::sync::GILOnceCell::new();
-
-#[cfg(PyPy)]
-fn is_dict_items_type(v: &Bound<'_, PyAny>) -> bool {
-    let py = v.py();
-    let items_type = DICT_ITEMS_TYPE
-        .get_or_init(py, || {
-            py.eval("type({}.items())", None, None)
-                .unwrap()
-                .downcast::<PyType>()
-                .unwrap()
-                .into()
-        })
-        .bind(py);
-    v.is_instance(items_type).unwrap_or(false)
-}
-
 #[cfg_attr(debug_assertions, derive(Debug))]
 pub struct PyArgs<'py> {
     pub args: Option<PyPosArgs<'py>>,