qs: large sweep of dead code removals

quickshell/Common/QmlUtils.js

@@ -0,0 +1,27 @@
+.pragma library
+
+function findParentFlickable(item) {
+    while (item) {
+        if (item.hasOwnProperty("contentY") && item.hasOwnProperty("contentItem"))
+            return item;
+        item = item.parent;
+    }
+    return null;
+}
+
+function findSettings(item) {
+    while (item) {
+        if (item.saveValue !== undefined && item.loadValue !== undefined)
+            return item;
+        item = item.parent;
+    }
+    return null;
+}
+
+function normalizePinList(value) {
+    if (Array.isArray(value))
+        return value.filter(v => v);
+    if (typeof value === "string" && value.length > 0)
+        return [value];
+    return [];
+}