Removed a stderr debug message that was accidentally left in (bug #1863153)

NEWS

@@ -1,6 +1,7 @@
 Version 0.19 ( )
 -------------------------------
-- 
+- Removed a stderr debug message that was accidentally left in (bug #1863153)
+
 
 Version 0.18 (November 11 2007)
 -------------------------------

src/channel.c

@@ -1414,7 +1414,6 @@ libssh2_channel_read_ex(LIBSSH2_CHANNEL * channel, int stream_id, char *buf,
         } while (rc > 0);
 
         if ((rc < 0) && (rc != PACKET_EAGAIN)) {
-            fprintf(stderr, "return rc = %d\n", rc);
             return rc;
         }
         channel->read_bytes_read = 0;