removed old split_with_seperator_function

src/util_string.h

@@ -38,7 +38,6 @@ const char *calendar_to_cstr(int calendar);
 
 std::string get_scientific(double p_float_string);
 
-std::vector<std::string> split_with_seperator(const std::string &sourceString, const char seperator);
 bool string_is_float(const std::string &str);
 bool string_is_int(const std::string &str);
 void cstr_replace_char(char *str_in, char orig_char, char rep_char);