Remove FMT dependency (#1472)

All occurrences of log() have been replaced with qDebug()

bonus meme: remove a bunch of std::string usages in the pubsub client

Fixes #1467

src/util/Helpers.hpp

@@ -1,16 +1,9 @@
 #pragma once
 
-#include <fmt/format.h>
 #include <QString>
 
 namespace chatterino {
 
-template <typename... Args>
-auto fS(Args &&... args)
-{
-    return fmt::format(std::forward<Args>(args)...);
-}
-
 QString generateUuid();
 
 QString formatRichLink(const QString &url, bool file = false);
@@ -21,13 +14,3 @@ QString formatRichNamedLink(const QString &url, const QString &name,
 QString shortenString(const QString &str, unsigned maxWidth = 50);
 
 }  // namespace chatterino
-
-namespace fmt {
-
-// format_arg for QString
-inline void format_arg(BasicFormatter<char> &f, const char *&, const QString &v)
-{
-    f.writer().write("{}", v.toStdString());
-}
-
-}  // namespace fmt

src/util/IncognitoBrowser.cpp

@@ -5,8 +5,6 @@
 #include <QSettings>
 #include <QVariant>
 
-#include "debug/Log.hpp"
-
 namespace chatterino {
 namespace {
 #ifdef Q_OS_WIN

src/util/StreamLink.cpp

@@ -1,7 +1,6 @@
 #include "util/StreamLink.hpp"
 
 #include "Application.hpp"
-#include "debug/Log.hpp"
 #include "singletons/Settings.hpp"
 #include "util/Helpers.hpp"
 #include "widgets/dialogs/QualityPopup.hpp"
@@ -92,7 +91,7 @@ namespace {
             }
             else
             {
-                log("Error occured {}", err);
+                qDebug() << "Error occured" << err;
             }
 
             p->deleteLater();
@@ -119,7 +118,7 @@ void getStreamQualities(const QString &channelURL,
         [=](int res) {
             if (res != 0)
             {
-                log("Got error code {}", res);
+                qDebug() << "Got error code" << res;
                 // return;
             }
             QString lastLine = QString(p->readAllStandardOutput());