Qt: Hide game list vertical header (#3545)

Got lost in the refactoring in 5f8716a9f0.

Also remove two no-op function calls.

src/duckstation-qt/gamelistwidget.cpp

@@ -1727,7 +1727,6 @@ GameListListView::GameListListView(GameListModel* model, GameListSortModel* sort
   setContextMenuPolicy(Qt::CustomContextMenu);
   setAlternatingRowColors(true);
   setShowGrid(false);
-  setCurrentIndex({});
 
   QHeaderView* const horizontal_header = horizontalHeader();
   horizontal_header->setHighlightSections(false);
@@ -1738,6 +1737,8 @@ GameListListView::GameListListView(GameListModel* model, GameListSortModel* sort
   horizontal_header->setSectionResizeMode(GameListModel::Column_FileTitle, QHeaderView::Stretch);
   horizontal_header->setSectionResizeMode(GameListModel::Column_Icon, QHeaderView::ResizeToContents);
 
+  verticalHeader()->hide();
+
   setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
   setVerticalScrollMode(QAbstractItemView::ScrollMode::ScrollPerPixel);
 
@@ -1819,7 +1820,6 @@ void GameListListView::setFixedColumnWidths()
   setFixedColumnWidth(fm, GameListModel::Column_FileSize, size_width);
   setFixedColumnWidth(fm, GameListModel::Column_UncompressedSize, size_width);
 
-  setFixedColumnWidth(GameListModel::Column_Icon, 45);
   setFixedColumnWidth(GameListModel::Column_Region, 55);
   setFixedColumnWidth(GameListModel::Column_Achievements, 100);
   setFixedColumnWidth(GameListModel::Column_Compatibility, 100);