Problem:
The SSL_CRL options are not available with YASSL. Therefore,
there is an assertion in the SSL code to check that ssl_crl and
ssl_crlpath are not set by mistake when YASSL is enabled. This
assertion was hit from replication code because replication code
did not have a special case to set these to NULL when YASSL is
enabled.
Fix:
Replication code would set ssl_crl/ssl_crlpath in two places:
 1. In connect_to_master, we fix the bug by setting these
    variables to NULL when YASSL is enabled.
 2. The options are also set in rpl_connect_master. However, it
    turns out this function is not used anywhere. So here we fix
    the bug by removing the dead code.