[2.2.x] Reverted "Fixed forms_tests.tests.test_renderers with Jinja 3.1.0+."

This reverts commit 1d9d082acf.
Backport of abfdb4d7f3 from main

tests/forms_tests/tests/test_renderers.py

@@ -1,12 +1,10 @@
 import os
-import posixpath
 import unittest
 
 from django.forms.renderers import (
     BaseRenderer, DjangoTemplates, Jinja2, TemplatesSetting,
 )
 from django.test import SimpleTestCase
-from django.utils.version import get_version_tuple
 
 try:
     import jinja2
@@ -48,28 +46,6 @@ class Jinja2Tests(SharedTests, SimpleTestCase):
     renderer = Jinja2
     expected_widget_dir = 'jinja2'
 
-    @property
-    def jinja2_version(self):
-        return get_version_tuple(jinja2.__version__)
-
-    def test_installed_apps_template_found(self):
-        """Can find a custom template in INSTALLED_APPS."""
-        renderer = self.renderer()
-        # Found because forms_tests is .
-        tpl = renderer.get_template("forms_tests/custom_widget.html")
-        expected_path = os.path.abspath(
-            os.path.join(os.path.dirname(__file__), "..", self.expected_widget_dir)
-        )
-        if self.jinja2_version < (3, 1):
-            expected_path = os.path.join(
-                expected_path, "forms_tests", "custom_widget.html"
-            )
-        else:
-            expected_path = posixpath.join(
-                expected_path, "forms_tests", "custom_widget.html"
-            )
-        self.assertEqual(tpl.origin.name, expected_path)
-
 
 class TemplatesSettingTests(SharedTests, SimpleTestCase):
     renderer = TemplatesSetting