tls: remove duplicate line

lib/tls.js

@@ -1023,7 +1023,6 @@ Server.prototype.setOptions = function(options) {
   if (options.secureProtocol) this.secureProtocol = options.secureProtocol;
   if (options.crl) this.crl = options.crl;
   if (options.ciphers) this.ciphers = options.ciphers;
-  if (options.secureProtocol) this.secureProtocol = options.secureProtocol;
   var secureOptions = options.secureOptions || 0;
   if (options.honorCipherOrder) {
     secureOptions |= constants.SSL_OP_CIPHER_SERVER_PREFERENCE;