Click on Text tab on top line of your winplotr (see your ..png file containing tools, help option). Then un-click Filename (ON/OFF) option. It will be removed.

Ashok Bhakar , As soon as I unclick Filename (ON/OFF), all of the written things goes away, like Yobs, Ycalc, etc., along with the file name.

Dear Anshul Sharma,

you can export the data by selecting XYN filetype, and then plot in the origin or somewhere else.

Murat Sertkol , that means there is no way of removing the name from winplotr, as you said, one has to transfer data to origin?

Yes, all will ON/OFF simultaneously like filename, Yobs, Ycalc, etc.

Ashok Bhakar , that is the issue, I want that particular thing to get removed only.