Clean up contact utility file name

ts/components/conversation/ContactDetail.tsx

@@ -16,7 +16,7 @@ import {
   renderAvatar,
   renderContactShorthand,
   renderName,
-} from './_contactUtil';
+} from './contactUtil';
 
 import type { LocalizerType } from '../../types/Util';
 

ts/components/conversation/EmbeddedContact.tsx

@@ -1,4 +1,4 @@
-// Copyright 2018-2020 Signal Messenger, LLC
+// Copyright 2018-2021 Signal Messenger, LLC
 // SPDX-License-Identifier: AGPL-3.0-only
 
 import React from 'react';
@@ -11,7 +11,7 @@ import {
   renderAvatar,
   renderContactShorthand,
   renderName,
-} from './_contactUtil';
+} from './contactUtil';
 
 export type Props = {
   contact: EmbeddedContactType;

ts/components/conversation/contactUtil.tsx

@@ -12,8 +12,6 @@ import { AvatarColors } from '../../types/Colors';
 import type { EmbeddedContactType } from '../../types/EmbeddedContact';
 import { getName } from '../../types/EmbeddedContact';
 
-// This file starts with _ to keep it from showing up in the StyleGuide.
-
 export function renderAvatar({
   contact,
   i18n,