Remove pep517 dependency and LocalPackage fixture, no longer used.

Author: jaraco

setup.cfg

@@ -46,7 +46,6 @@ testing =
 	# local
 	importlib_resources>=1.3; python_version < "3.9"
 	packaging
-	pep517
 	pyfakefs
 	flufl.flake8
 	pytest-perf >= 0.9.2

tests/fixtures.py

@@ -231,21 +231,6 @@ def setUp(self):
         build_files(EggInfoFile.files, prefix=self.site_dir)
 
 
-class LocalPackage:
-    files: FilesDef = {
-        "setup.py": """
-            import setuptools
-            setuptools.setup(name="local-pkg", version="2.0.1")
-            """,
-    }
-
-    def setUp(self):
-        self.fixtures = contextlib.ExitStack()
-        self.addCleanup(self.fixtures.close)
-        self.fixtures.enter_context(tempdir_as_cwd())
-        build_files(self.files)
-
-
 def build_files(file_defs, prefix=pathlib.Path()):
     """Build a set of files/directories, as described by the