Qt: Remove redundant grid layout in updater

Author: stenzek

src/duckstation-qt/autoupdaterdialog.ui

@@ -161,20 +161,20 @@
     </layout>
    </item>
    <item>
-    <layout class="QGridLayout" name="downloadLayout" columnstretch="1,0">
-     <item row="1" column="0">
+    <widget class="QLabel" name="downloadStatus"/>
+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="downloadLayout" stretch="1,0">
+     <item>
       <widget class="QProgressBar" name="downloadProgress"/>
      </item>
-     <item row="1" column="1">
+     <item>
       <widget class="QDialogButtonBox" name="downloadButtonBox">
        <property name="standardButtons">
         <set>QDialogButtonBox::StandardButton::Cancel</set>
        </property>
       </widget>
      </item>
-     <item row="0" column="0" colspan="2">
-      <widget class="QLabel" name="downloadStatus"/>
-     </item>
     </layout>
    </item>
   </layout>