plasmoid: Use `data-error` icon instead of the old `emblem-important`

Loading the icon for the button from resources ceased to work (maybe when
switching to `PlasmaComponents3.ToolButton`). This change works around the
problem and the old icon no longer needs to be bundled.

plasmoid/package/contents/ui/DirectoriesPage.qml

@@ -67,7 +67,7 @@ ColumnLayout {
                             }
                             TinyButton {
                                 id: errorsButton
-                                icon.source: ":/icons/hicolor/scalable/emblems/emblem-important-old.svg"
+                                icon.name: "data-error"
                                 tooltip: qsTr("Show errors")
                                 visible: pullErrorCount > 0
                                 onClicked: {

plasmoid/package/contents/ui/main.qml

@@ -68,9 +68,7 @@ Item {
                     ":/icons/hicolor/scalable/status/syncthing-default.svg")
         plasmoid.setAction("showSettings", qsTr("Settings"), "configure")
         plasmoid.setAction("showLog", qsTr("Log"), "text-x-generic")
-        plasmoid.setAction(
-                    "showErrors", qsTr("Internal errors"),
-                    ":/icons/hicolor/scalable/emblems/emblem-important-old.svg")
+        plasmoid.setAction("showErrors", qsTr("Internal errors"), "data-error")
         plasmoid.setAction("rescanAllDirs", qsTr("Rescan all directories"),
                            "folder-sync")
         plasmoid.setAction("restartSyncthing", qsTr("Restart Syncthing"),

widgets/resources/icons/hicolor/scalable/emblems/emblem-important-old.svg

@@ -1,19 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 22 22">
-  <defs id="defs3051">
-    <style type="text/css" id="current-color-scheme">
-      .ColorScheme-Text {
-        color:#4d4d4d;
-      }
-      </style>
-  </defs>
-    <path
-       style="opacity:1;fill:#da4453;fill-opacity:1;stroke:none"
-       d="m 12,4 -4.5,8 -4.5,8 9,0 9,0 -4.5,-8 z m -1,5 2,0 0,6 -2,0 z m 0,7 2,0 0,2 -2,0 z"
-       id="path4156"
-       class="ColorScheme-Text"
-        />
-    <path
-       style="fill:#ffffff;fill-opacity:1;stroke:none;stroke-width:2;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
-       d="M 11 9 L 11 15 L 13 15 L 13 9 L 11 9 z M 11 16 L 11 18 L 13 18 L 13 16 L 11 16 z "
-       id="rect3348" />
-</svg>

widgets/resources/syncthingwidgetsicons.qrc

@@ -11,7 +11,6 @@
         <file>icons/hicolor/scalable/app/syncthingtray.svg</file>
         <file>icons/hicolor/scalable/actions/globe.svg</file>
         <file>icons/hicolor/scalable/places/user-home.svg</file>
-        <file>icons/hicolor/scalable/emblems/emblem-important-old.svg</file>
         <file>icons/hicolor/scalable/actions/edit-undo.svg</file>
         <file>icons/hicolor/scalable/actions/document-open.svg</file>
         <file>icons/hicolor/scalable/actions/go-down.svg</file>