remove unneeded methods

ortools/lp_data/lp_print_utils.h

@@ -36,10 +36,6 @@ inline std::string Stringify(const double a) {
   return absl::StrFormat("%.16g", a);
 }
 
-inline std::string Stringify(const long double a) {
-  return absl::StrFormat("%.19g", a);
-}
-
 // Returns a string "num/den" representing the rational approximation of x.
 // The absolute difference between the output fraction and the input "x" will
 // not exceed "precision".

ortools/lp_data/lp_types.h

@@ -73,8 +73,6 @@ DEFINE_STRONG_INT64_TYPE(EntryIndex);
 
 static inline double ToDouble(double f) { return f; }
 
-static inline double ToDouble(long double f) { return static_cast<double>(f); }
-
 // The type Fractional denotes the type of numbers on which the computations are
 // performed. This is defined as double here, but it could as well be float,
 // DoubleDouble, QuadDouble, or infinite-precision rationals.