MainWindow: Remove cancel button.

src/View/MainWindow.py

@@ -408,12 +408,11 @@ class ApplicationWindow(QMainWindow, ListedSubWindow, WindowToolKit):
 
         sql_request_count = self._study.sql_save_request_count()
         progress = QProgressDialog(
-            "Saving...", "Cancel",
+            "Saving...", None,
             0, sql_request_count,
             parent=self
         )
         progress.setWindowModality(Qt.WindowModal)
-
         progress.setValue(0)
 
         logger.info("Save...")