How to remove part of a path?

I create a path using elipse tool. I want to remove 1/4 of it to create 'c' like shape. How to do it? I found an old tutorial saying that I can just select this part of the path and hit delete. It does not work unfortunately for me. Any ideas how to achieve it?

Here is the tutorial: https://design.tutsplus.com/tutorials/create-cool-typography-using-paths-in-photoshop--psd-14090

I'm refering to the step in the 4th screenshot in the tutorial:

"Pick the Direct Selection Tool (A). Note that no one of the anchor points are selected, click on the path between the two anchor points and click delete."

Thank you.