sed, Perl 5 -p, Perl 6 -p, 6 bytes, score 5

#s/.//

Try it online!

Works as sed, Perl 5 and Perl 6 program. The 1st byte is removable.

Perl 5 -p, Perl 6 -p, 116 bytes, score 105

s:p(-4)/.//

#s/.//

Try it online!Try it online!

Works as Perl 5 and Perl 6 program. The 5th1st byte is removable.