diff --git a/core/utils/__init__.py b/core/utils/__init__.py
index 136cd5e0..f4ae2ffe 100644
--- a/core/utils/__init__.py
+++ b/core/utils/__init__.py
@@ -1,6 +1,5 @@
 import requests
 
-from core.utils import shutil_custom
 from core.utils.common import clean_dir, flatten, get_dirs, process_dir
 from core.utils.download_info import get_download_info, update_download_info_status
 from core.utils.encoding import char_replace, convert_to_ascii
@@ -42,4 +41,3 @@ from core.utils.paths import (
 from core.utils.processes import RunningProcess, restart
 
 requests.packages.urllib3.disable_warnings()
-shutil_custom.monkey_patch()
diff --git a/core/utils/shutil_custom.py b/core/utils/shutil_custom.py
deleted file mode 100644
index a6cb3af8..00000000
--- a/core/utils/shutil_custom.py
+++ /dev/null
@@ -1,18 +0,0 @@
-from __future__ import (
-    absolute_import,
-    division,
-    print_function,
-    unicode_literals,
-)
-
-from functools import partial
-import shutil
-from six import PY2
-
-
-def monkey_patch(length=512 * 1024):
-    if PY2:
-        # On Python 2 monkey patch shutil.copyfileobj()
-        # to adjust the buffer length to 512KB rather than 4KB
-        original_copyfileobj = shutil.copyfileobj
-        shutil.copyfileobj = partial(original_copyfileobj, length=length)