remove a redundent forward declaration

diff --git a/src/include/surf/surf.h b/src/include/surf/surf.h
index aeabe47..7a7a091 100644 (file)
--- a/src/include/surf/surf.h
+++ b/src/include/surf/surf.h
@@ -46,7 +46,6 @@ class NetworkModel;
 class StorageModel;
 class Resource;
 class ResourceLmm;
-class HostImpl;
 class HostCLM03;
 class NetworkCm02Link;
 class Action;