audio/tagutil: Adjust hardcoded compiler flags

Remove hardcoded generic optimization
Remove compiler flags -o aslr and -fsanitize=undefined to fix build on
other platforms than x86

PR: 258351
Reported by: pkg-fallout
Reviewed by: Alexandre Perrin (maintainer)
Approved by: tcberner (mentor)
Differential Revision: https://reviews.freebsd.org/D31912