[cleanup] Remove unused method

mycpp/gc_str.cc

@@ -533,17 +533,6 @@ unsigned BigStr::hash(HashFunc h) {
   return hash_;
 }
 
-// for raw_input() to look like GNU readline
-void BigStr::RemoveNewlineHack() {
-  CHECK(data_[len_ - 1] == '\n');
-
-  // This is done before using the string, string can't be hashed
-  DCHECK(is_hashed_ == 0);
-
-  data_[len_ - 1] = '\0';
-  len_--;
-}
-
 static inline BigStr* _StrFormat(const char* fmt, int fmt_len, va_list args) {
   auto beg = std::cregex_iterator(fmt, fmt + fmt_len, gStrFmtRegex);
   auto end = std::cregex_iterator();

mycpp/gc_str.h

@@ -58,9 +58,6 @@ class BigStr {
   BigStr* upper();
   BigStr* lower();
 
-  // for raw_input() to look like GNU readline
-  void RemoveNewlineHack();
-
   // Other options for fast comparison / hashing / string interning:
   // - unique_id_: an index into intern table.  I don't think this works unless
   //   you want to deal with rehashing all strings when the set grows.