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diff --git a/Tools/Source/TianoTools/Pccts/h/ast.h b/Tools/Source/TianoTools/Pccts/h/ast.h
deleted file mode 100644
index 5ff84bd76c..0000000000
--- a/Tools/Source/TianoTools/Pccts/h/ast.h
+++ /dev/null
@@ -1,121 +0,0 @@
-/* Abstract syntax tree
- *
- * Macros, definitions
- *
- * SOFTWARE RIGHTS
- *
- * We reserve no LEGAL rights to the Purdue Compiler Construction Tool
- * Set (PCCTS) -- PCCTS is in the public domain.  An individual or
- * company may do whatever they wish with source code distributed with
- * PCCTS or the code generated by PCCTS, including the incorporation of
- * PCCTS, or its output, into commerical software.
- *
- * We encourage users to develop software with PCCTS.  However, we do ask
- * that credit is given to us for developing PCCTS.  By "credit",
- * we mean that if you incorporate our source code into one of your
- * programs (commercial product, research project, or otherwise) that you
- * acknowledge this fact somewhere in the documentation, research report,
- * etc...  If you like PCCTS and have developed a nice tool with the
- * output, please mention that you developed it using PCCTS.  In
- * addition, we ask that this header remain intact in our source code.
- * As long as these guidelines are kept, we expect to continue enhancing
- * this system and expect to make other tools available as they are
- * completed.
- *
- * ANTLR 1.33
- * Terence Parr
- * Parr Research Corporation
- * with Purdue University and AHPCRC, University of Minnesota
- * 1989-2000
- */
-
-#ifndef ZZAST_H
-#define ZZAST_H
-
-#define zzastOvfChk														\
-			if ( zzast_sp <= 0 )                                        \
-            {                                                           \
-                fprintf(stderr, zzStackOvfMsg, __FILE__, __LINE__);    	\
-                exit(PCCTS_EXIT_FAILURE);                                               \
-            }
-
-#ifndef USER_DEFINED_AST
-#ifndef AST_FIELDS
-#define AST_FIELDS
-#endif
-
-typedef struct _ast {
-            struct _ast *right, *down;
-#ifdef zzAST_DOUBLE
-            struct _ast *left, *up;
-#endif
-            AST_FIELDS
-} AST;
-
-#else
-
-#ifdef zzAST_DOUBLE
-#define AST_REQUIRED_FIELDS   struct _ast *right, *down, *left, *up;
-#else
-#define AST_REQUIRED_FIELDS   struct _ast *right, *down;
-#endif
-
-#endif
-
-
-/* N o d e  a c c e s s  m a c r o s */
-#define zzchild(t)		(((t)==NULL)? (AST *) NULL:(t->down))   /* MR19 */
-#define zzsibling(t)	(((t)==NULL)? (AST *) NULL:(t->right))  /* MR19 */
-
-
-/* define global variables needed by #i stack */
-#define zzASTgvars												\
-	AST *zzastStack[ZZAST_STACKSIZE];							\
-	int zzast_sp = ZZAST_STACKSIZE;
-
-#define zzASTVars	AST *_ast = NULL, *_sibling = NULL, *_tail = NULL
-#define zzSTR		( (_tail==NULL)?(&_sibling):(&(_tail->right)) )
-#define zzastCur	(zzastStack[zzast_sp])
-#define zzastArg(i)	(zzastStack[zztsp-i])
-#define zzastPush(p) zzastOvfChk; zzastStack[--zzast_sp] = p;
-#define zzastDPush	--zzast_sp
-#define zzastMARK	zztsp=zzast_sp;		/* Save state of stack */
-#define zzastREL	zzast_sp=zztsp;		/* Return state of stack */
-#define zzrm_ast	{zzfree_ast(*_root); _tail = _sibling = (*_root)=NULL;}
-
-extern int zzast_sp;
-extern AST *zzastStack[];
-
-/* MR26 */
-
-#ifdef PCCTS_USE_STDARG
-AST *zztmake(AST *, ...);
-#else
-AST *zztmake();
-#endif
-
-#ifdef __USE_PROTOS
-void zzlink(AST **, AST **, AST **);
-void zzsubchild(AST **, AST **, AST **);
-void zzsubroot(AST **, AST **, AST **);
-void zzpre_ast(AST *, void (*)(AST *), void (*)(AST *), void (*)(AST *));
-void zzfree_ast(AST *);
-AST *zzdup_ast(AST *);
-void zztfree(AST *);
-void zzdouble_link(AST *, AST *, AST *);
-AST *zzastnew(void);
-
-#else
-
-void zzlink();
-AST *zzastnew();
-void zzsubchild();
-void zzsubroot();
-void zzpre_ast();
-void zzfree_ast();
-AST *zzdup_ast();
-void zztfree();
-void zzdouble_link();
-#endif
-
-#endif