remove use of service_is function

src/include/66/service.h

src/lib66/exec/ssexec_signal.c

src/lib66/exec/ssexec_status.c

src/lib66/info/info_graph_display_service.c

src/lib66/sanitize/sanitize_fdholder.c

src/lib66/sanitize/sanitize_source.c

src/lib66/sanitize/sanitize_write.c

src/lib66/service/service_graph_build.c

src/lib66/service/service_is_g.c

src/lib66/svc/svc_compute_ns.c