Fix pytde FTBFS caused by commit 5cfeb8e

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
(cherry picked from commit a0a0ac290e)

sipgen/lexer.l

@@ -86,9 +86,9 @@ public                      {return TK_PUBLIC;}
 protected                   {return TK_PROTECTED;}
 private                     {return TK_PRIVATE;}
 signals                     {return TK_SIGNALS;}
-TQ_SIGNAL                   {return TK_SIGNAL_METHOD;}
+signal                      {return TK_SIGNAL_METHOD;}
 slots                       {return TK_SLOTS;}
-TQ_SLOT                     {return TK_SLOT_METHOD;}
+slot                        {return TK_SLOT_METHOD;}
 char                        {return TK_CHAR;}
 wchar_t                     {return TK_WCHAR_T;}
 bool                        {return TK_BOOL;}