print: remove more Token.String() calls
print: remove more Token.String() calls

name      old time/op    new time/op    delta
Fprint-4    13.0µs ± 1%    12.7µs ± 2%  -2.55%          (p=0.009 n=5+6)

mvdan/sh,mvdan/sh,mvdan/sh,mvdan/sh