remove test relying on Werkzeug Local internals

tests/test_regression.py

@@ -1,59 +1,5 @@
-import gc
-import platform
-import threading
-
-import pytest
-
 import flask
 
-_gc_lock = threading.Lock()
-
-
-class assert_no_leak:
-    def __enter__(self):
-        gc.disable()
-        _gc_lock.acquire()
-        loc = flask._request_ctx_stack._local
-
-        # Force Python to track this dictionary at all times.
-        # This is necessary since Python only starts tracking
-        # dicts if they contain mutable objects.  It's a horrible,
-        # horrible hack but makes this kinda testable.
-        loc.__storage__["FOOO"] = [1, 2, 3]
-
-        gc.collect()
-        self.old_objects = len(gc.get_objects())
-
-    def __exit__(self, exc_type, exc_value, tb):
-        gc.collect()
-        new_objects = len(gc.get_objects())
-        if new_objects > self.old_objects:
-            pytest.fail("Example code leaked")
-        _gc_lock.release()
-        gc.enable()
-
-
-@pytest.mark.skipif(platform.python_implementation() == "PyPy", reason="CPython only")
-def test_memory_consumption():
-    app = flask.Flask(__name__)
-
-    @app.route("/")
-    def index():
-        return flask.render_template("simple_template.html", whiskey=42)
-
-    def fire():
-        with app.test_client() as c:
-            rv = c.get("/")
-            assert rv.status_code == 200
-            assert rv.data == b"<h1>42</h1>"
-
-    # Trigger caches
-    fire()
-
-    with assert_no_leak():
-        for _x in range(10):
-            fire()
-
 
 def test_aborting(app):
     class Foo(Exception):