Remove unneccessary comments

Now we're using an enum the values themselves are self explanatory
Reviewed-by: NRich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2259)

ssl/ssl_sess.c

@@ -480,15 +480,15 @@ int ssl_get_prev_session(SSL *s, CLIENTHELLO_MSG *hello, int *al)
         r = tls_get_ticket_from_client(s, hello, &ret);
         switch (r) {
         case TICKET_FATAL_ERR_MALLOC:
-        case TICKET_FATAL_ERR_OTHER: /* Error during processing */
+        case TICKET_FATAL_ERR_OTHER:
             fatal = 1;
             goto err;
-        case TICKET_NONE:            /* No ticket found */
-        case TICKET_EMPTY:           /* Zero length ticket found */
+        case TICKET_NONE:
+        case TICKET_EMPTY:
             try_session_cache = 1;
-            break;                   /* Ok to carry on processing session id. */
-        case TICKET_NO_DECRYPT:      /* Ticket found but not decrypted. */
-        case TICKET_SUCCESS:         /* Ticket decrypted, *ret has been set. */
+            break;
+        case TICKET_NO_DECRYPT:
+        case TICKET_SUCCESS:
         case TICKET_SUCCESS_RENEW:
             break;
         }

ssl/t1_lib.c

@@ -1093,18 +1093,18 @@ TICKET_RETURN tls_get_ticket_from_client(SSL *s, CLIENTHELLO_MSG *hello,
     retv = tls_decrypt_ticket(s, PACKET_data(&ticketext->data), size,
                               hello->session_id, hello->session_id_len, ret);
     switch (retv) {
-    case TICKET_NO_DECRYPT: /* ticket couldn't be decrypted */
+    case TICKET_NO_DECRYPT:
         s->ext.ticket_expected = 1;
         return TICKET_NO_DECRYPT;
 
-    case TICKET_SUCCESS: /* ticket was decrypted */
+    case TICKET_SUCCESS:
         return TICKET_SUCCESS;
 
-    case TICKET_SUCCESS_RENEW: /* ticket decrypted but need to renew */
+    case TICKET_SUCCESS_RENEW:
         s->ext.ticket_expected = 1;
         return TICKET_SUCCESS;
 
-    default:           /* fatal error */
+    default:
         return TICKET_FATAL_ERR_OTHER;
     }
 }