chore: mini refactorings and dead code removal (#5512)

src/common/ConcurrentMap.hpp

@@ -1,102 +0,0 @@
-#pragma once
-
-#include <QMap>
-#include <QMutex>
-#include <QMutexLocker>
-
-#include <functional>
-#include <map>
-#include <memory>
-
-namespace chatterino {
-
-template <typename TKey, typename TValue>
-class ConcurrentMap
-{
-public:
-    ConcurrentMap() = default;
-
-    bool tryGet(const TKey &name, TValue &value) const
-    {
-        QMutexLocker lock(&this->mutex);
-
-        auto a = this->data.find(name);
-        if (a == this->data.end())
-        {
-            return false;
-        }
-
-        value = a.value();
-
-        return true;
-    }
-
-    TValue getOrAdd(const TKey &name, std::function<TValue()> addLambda)
-    {
-        QMutexLocker lock(&this->mutex);
-
-        auto a = this->data.find(name);
-        if (a == this->data.end())
-        {
-            TValue value = addLambda();
-            this->data.insert(name, value);
-            return value;
-        }
-
-        return a.value();
-    }
-
-    TValue &operator[](const TKey &name)
-    {
-        QMutexLocker lock(&this->mutex);
-
-        return this->data[name];
-    }
-
-    void clear()
-    {
-        QMutexLocker lock(&this->mutex);
-
-        this->data.clear();
-    }
-
-    void insert(const TKey &name, const TValue &value)
-    {
-        QMutexLocker lock(&this->mutex);
-
-        this->data.insert(name, value);
-    }
-
-    void each(
-        std::function<void(const TKey &name, const TValue &value)> func) const
-    {
-        QMutexLocker lock(&this->mutex);
-
-        QMapIterator<TKey, TValue> it(this->data);
-
-        while (it.hasNext())
-        {
-            it.next();
-            func(it.key(), it.value());
-        }
-    }
-
-    void each(std::function<void(const TKey &name, TValue &value)> func)
-    {
-        QMutexLocker lock(&this->mutex);
-
-        QMutableMapIterator<TKey, TValue> it(this->data);
-
-        while (it.hasNext())
-        {
-            it.next();
-            func(it.key(), it.value());
-        }
-    }
-
-private:
-    mutable QMutex mutex;
-    QMap<TKey, TValue> data;
-};
-
-}  // namespace chatterino

src/common/Credentials.cpp

@@ -6,7 +6,6 @@
 #include "singletons/Paths.hpp"
 #include "singletons/Settings.hpp"
 #include "util/CombinePath.hpp"
-#include "util/Overloaded.hpp"
 #include "util/Variant.hpp"
 
 #include <QJsonDocument>