Remove 'get_payload' from the PackageMetadata protocol now that Description is available.

Author: jaraco

importlib_metadata/_meta.py

@@ -18,9 +18,6 @@ def __getitem__(self, key: str) -> str:
     def __iter__(self) -> Iterator[str]:
         ...  # pragma: no cover
 
-    def get_payload(self) -> str:
-        ...  # pragma: no cover
-
     def get_all(self, name: str, failobj: _T = ...) -> Union[List[Any], _T]:
         """
         Return all values associated with a possibly multi-valued key.

tests/test_main.py

@@ -162,7 +162,7 @@ def test_metadata_loads(self):
     def test_metadata_loads_egg_info(self):
         pkg_name = self.pkg_with_non_ascii_description_egg_info(self.site_dir)
         meta = metadata(pkg_name)
-        assert meta.get_payload() == 'pôrˈtend\n'
+        assert meta['Description'] == 'pôrˈtend\n'
 
 
 class DiscoveryTests(fixtures.EggInfoPkg, fixtures.DistInfoPkg, unittest.TestCase):