core: remove filetype checking as qt will do this for us

Author: CMurtagh-LGTM

src/core/iconimageprovider.cpp

@@ -9,8 +9,6 @@
 #include <qsize.h>
 #include <qstring.h>
 
-constexpr std::array<QAnyStringView, 2> ICON_FILETYPES = {"png", "xpm"}; // currently cannot open svg file
-
 QPixmap
 IconImageProvider::requestPixmap(const QString& id, QSize* size, const QSize& requestedSize) {
 	QString iconName;
@@ -34,12 +32,7 @@ IconImageProvider::requestPixmap(const QString& id, QSize* size, const QSize& re
 
 	auto icon = QIcon::fromTheme(iconName);
 	if (icon.isNull() && !fallbackName.isEmpty()) icon = QIcon::fromTheme(fallbackName);
-	if (icon.isNull() && !path.isEmpty()) {
-		for (const auto& iconFiletype : ICON_FILETYPES){
-			icon = QPixmap(QString("%1.%2").arg(path, iconFiletype));
-			if (!icon.isNull()) break;
-		}
-	}
+	if (icon.isNull() && !path.isEmpty()) icon = QPixmap(path);
 
 	auto targetSize = requestedSize.isValid() ? requestedSize : QSize(100, 100);
 	if (targetSize.width() == 0 || targetSize.height() == 0) targetSize = QSize(2, 2);