Port away from KPluginMetaData::serviceTypes.

src/backend/corebackendmanager.cpp

@@ -51,12 +51,7 @@ CoreBackend* CoreBackendManager::backend()
 
 QVector<KPluginMetaData> CoreBackendManager::list() const
 {
-    auto filter = [&](const KPluginMetaData &metaData) {
-        return metaData.serviceTypes().contains(QStringLiteral("PartitionManager/Plugin")) &&
-               metaData.category().contains(QStringLiteral("BackendPlugin"));
-    };
-
-    return KPluginMetaData::findPlugins(QStringLiteral("kpmcore"), filter);
+    return KPluginMetaData::findPlugins(QStringLiteral("kpmcore"));
 }
 
 bool CoreBackendManager::load(const QString& name)

src/plugins/dummy/pmdummybackendplugin.json

@@ -106,9 +106,6 @@
         "Name[x-test]": "xxKDE Partition Manager Dummy Backendxx",
         "Name[zh_CN]": "KDE 分区管理器（虚拟后端）",
         "Name[zh_TW]": "KDE 磁碟分割區管理員 (虛設後端)",
-        "ServiceTypes": [
-            "PartitionManager/Plugin"
-        ],
         "Version": "1",
         "Website": "http://www.partitionmanager.org"
     }

src/plugins/sfdisk/pmsfdiskbackendplugin.json

@@ -105,9 +105,6 @@
         "Name[x-test]": "xxKDE Partition Manager sfdisk Backendxx",
         "Name[zh_CN]": "KDE 分区管理器（sfdisk 后端）",
         "Name[zh_TW]": "KDE 磁碟分割區管理員 (sfdisk 後端)",
-        "ServiceTypes": [
-            "PartitionManager/Plugin"
-        ],
         "Version": "1",
         "Website": "http://www.partitionmanager.org"
     }