Remove unused variable
Remove unused variable

Addressing:
/home/jcerny/openscap/src/OVAL/probes/SEAP/sexp-parser.c:278:21: warning: unused variable ‘d_labels’ [-Wunused-variable]
         const void *d_labels[] = {
                     ^~~~~~~~

redhatrises/openscap,mpreisler/openscap,jan-cerny/openscap,redhatrises/openscap,mpreisler/openscap,OpenSCAP/openscap,mpreisler/openscap,mpreisler/openscap,OpenSCAP/openscap,jan-cerny/openscap,OpenSCAP/openscap,jan-cerny/openscap,redhatrises/openscap,redhatrises/openscap,OpenSCAP/openscap,OpenSCAP/openscap,redhatrises/openscap,mpreisler/openscap,jan-cerny/openscap,jan-cerny/openscap,jan-cerny/openscap,redhatrises/openscap,mpreisler/openscap,OpenSCAP/openscap