diff --git a/model_wiedzy/51.session b/model_wiedzy/51.session
deleted file mode 100644
index 2b5162c..0000000
--- a/model_wiedzy/51.session
+++ /dev/null
@@ -1,6 +0,0 @@
-window_sizes 1500 752 375 1120 600 104
-
-show_stereotypes
-selected 
-  package_ref 129 // APO
-end