And copying files back and forth is simpler ?

vi works everywhere on all *nix. Even stripped down ones, even across serial lines from 15-year-old VT100's

i - go to insert mode, move around with the cursor, backspace to
delete characters
<esc> - get out of insert mode
/xx - forward find "xx" (in command mode)
dd - delete the current line
:x - exit (from command mode) and save file
:q! - exit (from command mode) and abandon the mess you made

that's all you need