diff --git a/pandas/compat/_optional.py b/pandas/compat/_optional.py
index a3c0e6691dd22..f36ff5c2b8abd 100644
--- a/pandas/compat/_optional.py
+++ b/pandas/compat/_optional.py
@@ -1,7 +1,6 @@
 import distutils.version
 import importlib
 import types
-from typing import Optional
 import warnings
 
 # Update install.rst when updating versions!
@@ -53,7 +52,7 @@ def import_optional_dependency(
     extra: str = "",
     raise_on_missing: bool = True,
     on_version: str = "raise",
-) -> Optional[types.ModuleType]:
+):
     """
     Import an optional dependency.
 
diff --git a/pandas/io/gcs.py b/pandas/io/gcs.py
index 310a1f9f398e9..862ccbb291c01 100644
--- a/pandas/io/gcs.py
+++ b/pandas/io/gcs.py
@@ -15,5 +15,5 @@ def get_filepath_or_buffer(filepath_or_buffer, encoding=None,
 
     fs = gcsfs.GCSFileSystem()
     filepath_or_buffer = fs.open(
-        filepath_or_buffer, mode)  # type: gcsfs.GCSFile
+        filepath_or_buffer, mode)
     return filepath_or_buffer, None, compression, True
diff --git a/pandas/io/s3.py b/pandas/io/s3.py
index 61fd984789f78..d784e8d473aac 100644
--- a/pandas/io/s3.py
+++ b/pandas/io/s3.py
@@ -34,5 +34,5 @@ def get_filepath_or_buffer(filepath_or_buffer, encoding=None,
         # for that bucket.
         fs = s3fs.S3FileSystem(anon=True)
         filepath_or_buffer = fs.open(
-            _strip_schema(filepath_or_buffer), mode)  # type: s3fs.S3File
+            _strip_schema(filepath_or_buffer), mode)
     return filepath_or_buffer, None, compression, True