[master] Removed unused primary_separator_ member from CSVFile class.

src/lib/util/csv_file.cc

@@ -80,8 +80,7 @@ CSVRow::checkIndex(const size_t at) const {
 }
 
 CSVFile::CSVFile(const std::string& filename)
-    : primary_separator_(','), filename_(filename), fs_(), cols_(0),
-      read_msg_() {
+    : filename_(filename), fs_(), cols_(0), read_msg_() {
 }
 
 CSVFile::~CSVFile() {

src/lib/util/csv_file.h

@@ -458,9 +458,6 @@ private:
     /// @brief Returns size of the CSV file.
     std::ifstream::pos_type size() const;
 
-    /// @brief Separator used by CSV file.
-    char primary_separator_;
-
     /// @brief CSV file name.
     std::string filename_;