testsuite: Fix double definition of 64-bits variant
testsuite: Fix double definition of 64-bits variant

If _FILE_OFFSET_BITS is defined we should not be wrapping these 64
variants, since they are macros in libc.

lpereira/kmod,lpereira/kmod,pmmccorm/kmod,Distrotech/kmod,lucasdemarchi/kmod,lucasdemarchi/kmod,pmmccorm/kmod,lpereira/kmod,Distrotech/kmod,pmmccorm/kmod,lucasdemarchi/kmod,Distrotech/kmod