how to delete section letter?

[Leeskeys]

I've modified chords in a song and want to modify section indicators as well. The original chart had 3 sections (A,B,C). I've changed it to two sections and have changed the double bar lines to single bar lines where appropriate. But I can't seem to get rid of the Section letters I don't need (see file attachment, I want to delete section letters which I've X'd out.

Thanks