Removed unused files, code cleanup

lib/features/linked_documents/bloc/state/linked_documents_state.dart

@@ -0,0 +1,13 @@
+import 'package:paperless_api/paperless_api.dart';
+
+class LinkedDocumentsState {
+  final bool isLoaded;
+  final PagedSearchResult<DocumentModel>? documents;
+  final DocumentFilter filter;
+
+  LinkedDocumentsState({
+    required this.filter,
+    this.isLoaded = false,
+    this.documents,
+  });
+}