Remove unused forward declaration

romainbrenguier · romainbrenguier · commit 1f9aa83a865a · 2018-11-15T14:52:30.000Z
diff --git a/src/pointer-analysis/dereference_callback.h b/src/pointer-analysis/dereference_callback.h
@@ -16,7 +16,6 @@ Author: Daniel Kroening, kroening@kroening.com
 
 #include "value_sets.h"
 
-class guardt;
 class exprt;
 class symbolt;
 
