Remove unused variables

servers/slapd/tools/centipede.c

servers/slapd/tools/ldif2id2children-bdb2.c

servers/slapd/tools/ldif2id2children.c

servers/slapd/tools/ldif2id2entry-bdb2.c

servers/slapd/tools/ldif2id2entry.c

servers/slapd/tools/ldif2index-bdb2.c

servers/slapd/tools/ldif2index.c

servers/slapd/tools/ldif2ldbm-bdb2.c

servers/slapd/tools/ldif2ldbm.c

servers/slurpd/fm.c

servers/slurpd/main.c

tests/progs/slapd-addel.c

tests/progs/slapd-read.c

tests/progs/slapd-search.c

tests/progs/slapd-tester.c