diff --git a/extra/machine-learning/data-sets/monks1.csv b/extra/machine-learning/data-sets/monks1.csv
deleted file mode 100644
index 7a36f8bbc7..0000000000
--- a/extra/machine-learning/data-sets/monks1.csv
+++ /dev/null
@@ -1,3 +0,0 @@
-432,7,no,yes
-1,1,1,1,1,1,1,1
-2,1,1,1,1,1,2,1