diff --git a/course_material/slides/fahad_DL_on_SCs_November_2019.pdf b/course_material/slides/fahad_DL_on_SCs_November_2019.pdf
new file mode 100644
index 0000000000000000000000000000000000000000..d0ddcb130c4bda3a571935530cf2ce7b19488bab
Binary files /dev/null and b/course_material/slides/fahad_DL_on_SCs_November_2019.pdf differ
diff --git a/utils/data_utils.py b/utils/data_utils.py
index 090337b579f9f531855db370bca7d2fb90eda0bd..f2d10e4111fe70fdc465287a3b5f18bff8d6981f 100644
--- a/utils/data_utils.py
+++ b/utils/data_utils.py
@@ -22,9 +22,6 @@ class DataValidator:
 
     """
 
-    def __init__(self):
-        """ No-op constructor. """
-
     @staticmethod
     def validated_data_dir(filename):
         """