drop spurious extra size

src/core/simgrid.c

@@ -549,7 +549,7 @@ int _starpu_simgrid_transfer(size_t size, unsigned src_node, unsigned dst_node,
 	hosts[1] = _starpu_simgrid_memory_node_get_host(dst_node);
 	STARPU_ASSERT(hosts[0] != hosts[1]);
 	if (size)
-		communication[1] = size+0.000001;
+		communication[1] = size;
 	else
 		/* Simgrid does not like 0-bytes transfers, fake one byte */
 		communication[1] = 1;