cleaning up code

include/cif++/CifUtils.hpp

@@ -26,11 +26,7 @@
 
 #pragma once
 
-#include <cassert>
 #include <filesystem>
-#include <iostream>
-#include <list>
-#include <memory>
 #include <set>
 #include <vector>
 

src/CifUtils.cpp

@@ -25,19 +25,12 @@
  */
 
 #include <atomic>
-#include <chrono>
 #include <cmath>
-#include <cstdio>
-#include <filesystem>
 #include <fstream>
-#include <iomanip>
 #include <iostream>
-#include <map>
 #include <mutex>
 #include <regex>
-#include <sstream>
 #include <thread>
-#include <tuple>
 
 #if defined(_MSC_VER)
 #define TERM_WIDTH 80