refactor(src/common|server): remove unused import (big part 2) (#20388)

src/common/Logging/AppenderFile.h

@@ -19,7 +19,7 @@
 #define APPENDERFILE_H
 
 #include "Appender.h"
-#include <atomic>
+#include <atomic> // NOTE: this import is NEEDED (even though some IDEs report it as unused)
 #include <vector>
 
 class AppenderFile : public Appender

src/common/Metric/Metric.h

@@ -22,7 +22,7 @@
 #include "Duration.h"
 #include "MPSCQueue.h"
 #include <functional>
-#include <memory>
+#include <memory> // NOTE: this import is NEEDED (even though some IDEs report it as unused)
 #include <string>
 #include <unordered_map>
 #include <vector>

src/common/Utilities/IteratorPair.h

@@ -18,7 +18,7 @@
 #ifndef IteratorPair_h__
 #define IteratorPair_h__
 
-#include <vector>
+#include <vector> // NOTE: this import is NEEDED (even though some IDEs report it as unused)
 
 namespace Acore
 {