Fixed delete file endpoint

src/endpoints/bettwaage.py

@@ -90,7 +90,8 @@ async def get_latest():
 @router.delete("/delete", tags=["file"])
 async def delete_file():
     os.remove(file_path)
-    return "Deleted file"
+    add_line_to_history("timestamp;tl;tr;bl;br;total;")
+    return "Deleted file and created new file with headers"
 
 
 @router.post("/zero", tags=["calibration"])