tests: fixup tests and linting issues

src/file/drawing/anchor/anchor.spec.ts

@@ -1,8 +1,6 @@
 import { assert, expect } from "chai";
-import { SinonStub, stub } from "sinon";
 
 import { Formatter } from "@export/formatter";
-import * as convenienceFunctions from "@util/convenience-functions";
 
 import { Utility } from "tests/utility";
 
@@ -458,7 +456,7 @@ describe("Anchor", () => {
                         "wp:docPr": {
                             _attr: {
                                 descr: "test",
-                                id: 0,
+                                id: 1,
                                 name: "test",
                                 title: "test",
                             },