I often select lines by clicking the line number in the margin in Notepad++ but I often click slightly to the right of the number which sets a breakpoint rather than selecting the line. I never use breakpoints in Notepad++ so I am looking for how to remove breakpoints from the margin so that I don't accidentally click it all the time.
Notepad++ has bookmarks, not breakpoints. They're useful sometimes because you can set them and use F2 or Shift+F2 to navigate between them.
You can turn them off in Settings which will remove the column next to the line numbers.
Circa-2020 Versions:
Circa-2021 Versions: