How to remove PASSED/FAILED text from the plot area?

The reason PASSED/FAILED is displayed in the plot is that the production control/test features have been used.

This can be turned off from Plot->Plot Type/Routing/Test.... Make sure no check-boxes are checked under the Limit curve section as shown below.

After doing this, go to Plot->Refresh… and click the  button. Then the PASSED/FAILED text should be removed.

If not, you must remove it manually. The procedure is the same as removing the nag screen as shown in the section below. This is because the nag screen and the PASSED/FAILED text are both a picture.