Splay operation currently does not have additional tests

02-splay_operation/task.md

@@ -10,8 +10,3 @@ You should submit the `splay_operation.*` file (but not the
 `splay_operation_test.*`).
 
 Source code templates can be found in [the git repository](https://gitlab.kam.mff.cuni.cz/datovky/assignments/-/tree/master).
-
-Files splay_operation_more_tests.{cpp,py} contain additional tests
-for bugs discovered in students' solutions during this semester.
-They are not included on recodex, but your program should pass them 
-in few seconds.