qt, refactor: Revert explicit including QStringBuilder

Author: hebasto

src/qt/bitcoin.cpp

@@ -50,7 +50,6 @@
 #include <QLocale>
 #include <QMessageBox>
 #include <QSettings>
-#include <QStringBuilder>
 #include <QThread>
 #include <QTimer>
 #include <QTranslator>
@@ -419,8 +418,8 @@ void BitcoinApplication::handleRunawayException(const QString &message)
 {
     QMessageBox::critical(
         nullptr, tr("Runaway exception"),
-        tr("A fatal error occurred. %1 can no longer continue safely and will quit.").arg(PACKAGE_NAME) %
-        QLatin1String("<br><br>") % GUIUtil::MakeHtmlLink(message, PACKAGE_BUGREPORT));
+        tr("A fatal error occurred. %1 can no longer continue safely and will quit.").arg(PACKAGE_NAME) +
+        QLatin1String("<br><br>") + GUIUtil::MakeHtmlLink(message, PACKAGE_BUGREPORT));
     ::exit(EXIT_FAILURE);
 }
 
@@ -430,8 +429,8 @@ void BitcoinApplication::handleNonFatalException(const QString& message)
     QMessageBox::warning(
         nullptr, tr("Internal error"),
         tr("An internal error occurred. %1 will attempt to continue safely. This is "
-           "an unexpected bug which can be reported as described below.").arg(PACKAGE_NAME) %
-        QLatin1String("<br><br>") % GUIUtil::MakeHtmlLink(message, PACKAGE_BUGREPORT));
+           "an unexpected bug which can be reported as described below.").arg(PACKAGE_NAME) +
+        QLatin1String("<br><br>") + GUIUtil::MakeHtmlLink(message, PACKAGE_BUGREPORT));
 }
 
 WId BitcoinApplication::getMainWinId() const

src/qt/guiutil.cpp

@@ -55,7 +55,6 @@
 #include <QShortcut>
 #include <QSize>
 #include <QString>
-#include <QStringBuilder>
 #include <QTextDocument> // for Qt::mightBeRichText
 #include <QThread>
 #include <QUrlQuery>
@@ -902,7 +901,7 @@ QString MakeHtmlLink(const QString& source, const QString& link)
 {
     return QString(source).replace(
         link,
-        QLatin1String("<a href=\"") % link % QLatin1String("\">") % link % QLatin1String("</a>"));
+        QLatin1String("<a href=\"") + link + QLatin1String("\">") + link + QLatin1String("</a>"));
 }
 
 void PrintSlotException(