libcacard/vcard_emul_nss: Remove unused statement (value stored is never read)
libcacard/vcard_emul_nss: Remove unused statement (value stored is never read)

Warning from ccc-analyzer:

libcacard/vcard_emul_nss.c:937:9: warning:
 Value stored to 'cert_count' is never read
        cert_count = options->vreader[i].cert_count;
        ^            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Stefan Weil <8d4c780fcfdc41841e5070f4c43da8958ba6aec0@weilnetz.de>
Signed-off-by: Michael Tokarev <389bd06664b699d49ce291f515b98373073ad5f4@tls.msk.ru>

elmarco/libcacard,SPICE/libcacard,elmarco/libcacard,SPICE/libcacard