[Bug plugins/105171] gcc/toplev.c: `local_tick` can overflow and become -1

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105171

--- Comment #19 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
It is a small optimization to remove the file is the timestamp is valid while
compiling.