How can I remove one data series from overlay plot?

[#1]

I plot 3 data series in one overlay plot; now I want to remove one of them directly from the plot. (not from the script)

in graph builder, when you right click on the graph under "line" option you can remove any "Y"; but in overlay plot I cannot find similar thing.

p.s: I have hundreds of Overlay plots and it's nearly impossible to change all of them to graph builder!

Any suggestion? Thanks

[#2]

For a "hack" solution: right click to get to the customize menu and then change the line color for the Y you want to remove to match the background color (e.g., white)?

[#3]

I have done that but under the white line a narrow black line appears!!! hahaha