diff --git a/pandas/core/dtypes/common.py b/pandas/core/dtypes/common.py
index b5cd73a81962b..8e67ef1c14cdf 100644
--- a/pandas/core/dtypes/common.py
+++ b/pandas/core/dtypes/common.py
@@ -1902,8 +1902,6 @@ def _is_dtype_type(arr_or_dtype, condition):
         if issubclass(arr_or_dtype, ExtensionDtype):
             arr_or_dtype = arr_or_dtype.type
         return condition(np.dtype(arr_or_dtype).type)
-    elif arr_or_dtype is None:
-        return condition(type(None))
 
     # if we have an array-like
     if hasattr(arr_or_dtype, 'dtype'):