Simplify stubs in Quill tests

ts/test-electron/quill/emoji/completion_test.tsx

@@ -9,8 +9,6 @@ import { EmojiData } from '../../../components/emoji/lib';
 
 describe('emojiCompletion', () => {
   let emojiCompletion: EmojiCompletion;
-  const mockOnPickEmoji = sinon.spy();
-  const mockSetEmojiPickerElement = sinon.spy();
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
   let mockQuill: any;
 
@@ -26,10 +24,8 @@ describe('emojiCompletion', () => {
       updateContents: sinon.stub(),
     };
     const options = {
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any
-      onPickEmoji: mockOnPickEmoji as any,
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any
-      setEmojiPickerElement: mockSetEmojiPickerElement as any,
+      onPickEmoji: sinon.stub(),
+      setEmojiPickerElement: sinon.stub(),
       skinTone: 0,
     };
 
@@ -40,12 +36,6 @@ describe('emojiCompletion', () => {
     emojiCompletion.render = sinon.stub();
   });
 
-  afterEach(function afterEach() {
-    mockOnPickEmoji.resetHistory();
-    mockSetEmojiPickerElement.resetHistory();
-    (emojiCompletion.render as sinon.SinonStub).resetHistory();
-  });
-
   describe('getCurrentLeafTextPartitions', () => {
     it('returns left and right text', () => {
       mockQuill.getSelection.returns({ index: 0, length: 0 });

ts/test-electron/quill/mentions/completion_test.tsx

@@ -53,8 +53,6 @@ const members: Array<ConversationType> = [
 ];
 
 describe('MentionCompletion', () => {
-  const mockSetMentionPickerElement = sinon.spy();
-
   let mockQuill: Omit<
     Partial<{ [K in keyof Quill]: SinonStub }>,
     'keyboard'
@@ -72,7 +70,7 @@ describe('MentionCompletion', () => {
       i18n: sinon.stub(),
       me,
       memberRepositoryRef,
-      setMentionPickerElement: mockSetMentionPickerElement,
+      setMentionPickerElement: sinon.stub(),
     };
 
     mockQuill = {