Normalize #includes in cdf.y

gcc/cobol/cdf.y

@@ -73,8 +73,6 @@ void ydferror( char const *s, int );
 %code requires {
   #include "cdfval.h"
 
-//  #include <map>
-//  #include <string>
   using std::map;
 
   static map<std::string, cdfval_t> dictionary;