diff --git a/data/grade.txt b/data/grade.txt
deleted file mode 100644
index efa3582..0000000
--- a/data/grade.txt
+++ /dev/null
@@ -1 +0,0 @@
-13b540cf16576eb07edd6d67a204a43b
\ No newline at end of file
diff --git a/data/info.txt b/data/info.txt
deleted file mode 100644
index 68ca5ef..0000000
--- a/data/info.txt
+++ /dev/null
@@ -1 +0,0 @@
-09975406912bb31cacc59f
diff --git a/data/old_grade.txt b/data/old_grade.txt
deleted file mode 100644
index efa3582..0000000
--- a/data/old_grade.txt
+++ /dev/null
@@ -1 +0,0 @@
-13b540cf16576eb07edd6d67a204a43b
\ No newline at end of file
diff --git a/info.txt b/info.txt
deleted file mode 100644
index 691b3c9..0000000
--- a/info.txt
+++ /dev/null
@@ -1 +0,0 @@
-09975406912bb31cacc59f2573b68768
\ No newline at end of file