Revert "preprocessor: fix bug in merge of rmExtraExo branch"

This reverts commit def2bf81.

Revert "preprocessor: fix bug in merge of rmExtraExo branch"
This reverts commit def2bf81.
e4b85657 · Houtan Bastani · d6a1a715 · e4b85657 · e4b85657
Commit e4b85657 authored Jun 09, 2015 by Houtan Bastani
--- a/preprocessor/ExprNode.hh
+++ b/preprocessor/ExprNode.hh
@@ -34,7 +34,6 @@ using namespace std;
 class DataTree;
 class VariableNode;
 class BinaryOpNode;
-class SymbolTable;

 typedef class ExprNode *expr_t;


--- a/preprocessor/ExternalFunctionsTable.hh
+++ b/preprocessor/ExternalFunctionsTable.hh
@@ -28,7 +28,6 @@ using namespace std;
 #include <map>

 #include "SymbolTable.hh"
-class SymbolTable;

 enum ExternalFunctionSetOrNot
  {