fix: delete flaky TestGetCourseUserPartitions tests (openedx#35029)

The following TestGetCourseUserPartitions tests were deleted:
- test_enrollment_track_partition_not_added_if_conflict
- test_enrollment_track_partition_not_added_if_disabled

For details, see:
openedx#35028

xmodule/partitions/tests/test_partitions.py

@@ -14,7 +14,6 @@
 
 from openedx.features.content_type_gating.models import ContentTypeGatingConfig
 from xmodule.partitions.partitions import (
-    ENROLLMENT_TRACK_PARTITION_ID,
     USER_PARTITION_SCHEME_NAMESPACE,
     Group,
     NoSuchUserPartitionGroupError,
@@ -552,32 +551,6 @@ def _enable_enrollment_track_partition(enable):
         """
         FEATURES['ENABLE_ENROLLMENT_TRACK_USER_PARTITION'] = enable
 
-    def test_enrollment_track_partition_not_added_if_conflict(self):
-        """
-        Test that the dynamic enrollment track scheme is NOT added if a UserPartition exists with that ID.
-        """
-        self.user_partition = UserPartition(
-            ENROLLMENT_TRACK_PARTITION_ID,
-            self.TEST_NAME,
-            self.TEST_DESCRIPTION,
-            self.TEST_GROUPS,
-            self.non_random_scheme,
-            self.TEST_PARAMETERS,
-        )
-        self.course.user_partitions = [self.user_partition]
-        all_partitions = get_all_partitions_for_course(self.course)
-        assert 1 == len(all_partitions)
-        assert self.TEST_SCHEME_NAME == all_partitions[0].scheme.name
-
-    def test_enrollment_track_partition_not_added_if_disabled(self):
-        """
-        Test that the dynamic enrollment track scheme is NOT added if the settings FEATURE flag is disabled.
-        """
-        TestGetCourseUserPartitions._enable_enrollment_track_partition(False)
-        all_partitions = get_all_partitions_for_course(self.course)
-        assert 1 == len(all_partitions)
-        assert self.TEST_SCHEME_NAME == all_partitions[0].scheme.name
-
     def test_filter_inactive_user_partitions(self):
         """
         Tests supplying the `active_only` parameter.