feat: allow saving file without any labels

labelme/app.py

@@ -1519,7 +1519,6 @@ class MainWindow(QtWidgets.QMainWindow):
 
     def saveFile(self, _value=False):
         assert not self.image.isNull(), "cannot save empty image"
-        if self._config['flags'] or self.hasLabels():
         if self.labelFile:
             # DL20180323 - overwrite when in directory
             self._saveFile(self.labelFile.filename)
@@ -1531,7 +1530,6 @@ class MainWindow(QtWidgets.QMainWindow):
 
     def saveFileAs(self, _value=False):
         assert not self.image.isNull(), "cannot save empty image"
-        if self.hasLabels():
         self._saveFile(self.saveFileDialog())
 
     def saveFileDialog(self):