Revert "ENH: Add tzdata to hard dependencies" (#63290)

Author: rhshadrach

pandas/__init__.py

@@ -3,7 +3,8 @@
 __docformat__ = "restructuredtext"
 
 # Let users know if they're missing any of our hard dependencies
-_hard_dependencies = ("numpy", "dateutil", "tzdata")
+# except tzdata (see https://github.com/pandas-dev/pandas/issues/63264)
+_hard_dependencies = ("numpy", "dateutil")
 
 for _dependency in _hard_dependencies:
     try:

pandas/tests/test_downstream.py

@@ -190,9 +190,9 @@ def test_yaml_dump(df):
     tm.assert_frame_equal(df, loaded2)
 
 
-@pytest.mark.parametrize("dependency", ["numpy", "dateutil", "tzdata"])
+@pytest.mark.parametrize("dependency", ["numpy", "dateutil"])
 def test_missing_required_dependency(monkeypatch, dependency):
-    # GH#61030, GH61273
+    # GH#61030
     original_import = __import__
     mock_error = ImportError(f"Mock error for {dependency}")