Remove some commented out code in libssl

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2774)

ssl/record/rec_layer_d1.c

@@ -1050,20 +1050,11 @@ int do_dtls1_write(SSL *s, int type, const unsigned char *buf,
     }
 
     /* record length after mac and block padding */
-    /*
-     * if (type == SSL3_RT_APPLICATION_DATA || (type == SSL3_RT_ALERT && !
-     * SSL_in_init(s)))
-     */
 
     /* there's only one epoch between handshake and app data */
 
     s2n(s->rlayer.d->w_epoch, pseq);
 
-    /* XDTLS: ?? */
-    /*
-     * else s2n(s->d1->handshake_epoch, pseq);
-     */
-
     memcpy(pseq, &(s->rlayer.write_sequence[2]), 6);
     pseq += 6;
     s2n(SSL3_RECORD_get_length(&wr), pseq);

ssl/s3_lib.c

@@ -3347,9 +3347,6 @@ long ssl3_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
             ctx->cert->dh_tmp = pkdh;
             return 1;
         }
-        /*
-         * break;
-         */
     case SSL_CTRL_SET_TMP_DH_CB:
         {
             SSLerr(SSL_F_SSL3_CTX_CTRL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
@@ -3381,7 +3378,6 @@ long ssl3_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
                                    &ctx->ext.supportedgroups_len,
                                    &nid, 1);
         }
-        /* break; */
 #endif                          /* !OPENSSL_NO_EC */
     case SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG:
         ctx->ext.servername_arg = parg;

ssl/ssl_ciph.c

@@ -701,9 +701,6 @@ static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method,
         co_list[co_list_num].prev = NULL;
         co_list[co_list_num].active = 0;
         co_list_num++;
-        /*
-         * if (!sk_push(ca_list,(char *)c)) goto err;
-         */
     }
 
     /*

ssl/statem/statem_clnt.c

@@ -649,8 +649,6 @@ WORK_STATE ossl_statem_client_pre_work(SSL *s, WORK_STATE wst)
 /*
  * Perform any work that needs to be done after sending a message from the
  * client to the server.
-    case TLS_ST_SR_CERT_VRFY:
-        return SSL3_RT_MAX_PLAIN_LENGTH;
  */
 WORK_STATE ossl_statem_client_post_work(SSL *s, WORK_STATE wst)
 {