Yes you can remove top line,
Store total line numbers tokencount(text.text,newline) to a variable linenumbers
I would use system:repeat x: x being tokencount(text.text,newline)
Append text to a textbox line by line ->
Textbox.text : Append : tokenat(text.text,linenumbers,newline)
subtract 1 from variable linenumbers
Well something like that.
Warning! I tend to overcomplicate things sometimes. There may be simple way, just my brain isn't picking it up right now.
Okay did this quickly: Very very raw, but proves it can be done :)