remove useless error messages

tcp.cc

@@ -254,11 +254,6 @@ long int TCP::Read(char *buffer, long int len) {
 
     if (len_ < 0 && errno == EAGAIN) len_ = 0;
     else if (len_ < 0 && errno != EAGAIN) {
-#ifdef BUILD_WINDOWS
-        printf ("%s ERROR:%s\n", __FUNCTION__, strerror (errno));
-#else
-    	fprintf (stderr, "%s ERROR:%s\n", __FUNCTION__, strerror (errno));
-#endif
         len_ = -2;
     }
     else if (len_ == 0) len_ = -1;