Remove entered text from label dialog

labelDialog.py

@@ -12,6 +12,7 @@ class LabelDialog(QDialog):
 
     def __init__(self, text='', parent=None):
         super(LabelDialog, self).__init__(parent)
+        self.setWindowTitle("Enter object's label")
         self.action = self.OK
         self.edit = QLineEdit()
         self.edit.setText(text)

labelme.py

@@ -537,7 +537,7 @@ class MainWindow(QMainWindow, WindowMixin):
 
         position MUST be in global coordinates.
         """
-        action = self.labelDialog.popUp(text="Enter object's name", position=position)
+        action = self.labelDialog.popUp(position=position)
         if action == self.labelDialog.OK:
             self.addLabel(self.canvas.setLastLabel(self.labelDialog.text()))
             if self.beginner(): # Switch to edit mode.