Fix pylint warning

qubesmanager/bootfromdevice.py

@@ -28,7 +28,7 @@ from qubesadmin import exc
 
 class VMBootFromDeviceWindow(ui_bootfromdevice.Ui_BootDialog,
                              QtWidgets.QDialog):
-    def __init__(self, vm, qapp, qubesapp=None, parent=None, new_vm = False):
+    def __init__(self, vm, qapp, qubesapp=None, parent=None, new_vm=False):
         super().__init__(parent)
 
         self.vm = vm