Remove unused repository icon utils

app/assets/javascripts/repository/utils/icon.js

-const entryTypeIcons = {
-  tree: 'folder',
-  commit: 'archive',
-};
-
-const fileTypeIcons = [
-  { extensions: ['pdf'], name: 'file-pdf-o' },
-  {
-    extensions: [
-      'jpg',
-      'jpeg',
-      'jif',
-      'jfif',
-      'jp2',
-      'jpx',
-      'j2k',
-      'j2c',
-      'png',
-      'gif',
-      'tif',
-      'tiff',
-      'svg',
-      'ico',
-      'bmp',
-    ],
-    name: 'file-image-o',
-  },
-  {
-    extensions: ['zip', 'zipx', 'tar', 'gz', 'bz', 'bzip', 'xz', 'rar', '7z'],
-    name: 'file-archive-o',
-  },
-  { extensions: ['mp3', 'wma', 'ogg', 'oga', 'wav', 'flac', 'aac'], name: 'file-audio-o' },
-  {
-    extensions: [
-      'mp4',
-      'm4p',
-      'm4v',
-      'mpg',
-      'mp2',
-      'mpeg',
-      'mpe',
-      'mpv',
-      'm2v',
-      'avi',
-      'mkv',
-      'flv',
-      'ogv',
-      'mov',
-      '3gp',
-      '3g2',
-    ],
-    name: 'file-video-o',
-  },
-  { extensions: ['doc', 'dot', 'docx', 'docm', 'dotx', 'dotm', 'docb'], name: 'file-word-o' },
-  {
-    extensions: [
-      'xls',
-      'xlt',
-      'xlm',
-      'xlsx',
-      'xlsm',
-      'xltx',
-      'xltm',
-      'xlsb',
-      'xla',
-      'xlam',
-      'xll',
-      'xlw',
-    ],
-    name: 'file-excel-o',
-  },
-  {
-    extensions: [
-      'ppt',
-      'pot',
-      'pps',
-      'pptx',
-      'pptm',
-      'potx',
-      'potm',
-      'ppam',
-      'ppsx',
-      'ppsm',
-      'sldx',
-      'sldm',
-    ],
-    name: 'file-powerpoint-o',
-  },
-];
-
-export const getIconName = (type, path) => {
-  if (entryTypeIcons[type]) return entryTypeIcons[type];
-
-  const extension = path.split('.').pop();
-  const file = fileTypeIcons.find(t => t.extensions.some(ext => ext === extension));
-
-  return file ? file.name : 'file-text-o';
-};

spec/frontend/repository/utils/icon_spec.js

-import { getIconName } from '~/repository/utils/icon';
-
-describe('getIconName', () => {
-  // Tests the returning font awesome icon name
-  // We only test one for each file type to save testing a lot of different
-  // file types
-  it.each`
-    type        | path           | icon
-    ${'tree'}   | ${''}          | ${'folder'}
-    ${'commit'} | ${''}          | ${'archive'}
-    ${'file'}   | ${'test.pdf'}  | ${'file-pdf-o'}
-    ${'file'}   | ${'test.jpg'}  | ${'file-image-o'}
-    ${'file'}   | ${'test.zip'}  | ${'file-archive-o'}
-    ${'file'}   | ${'test.mp3'}  | ${'file-audio-o'}
-    ${'file'}   | ${'test.flv'}  | ${'file-video-o'}
-    ${'file'}   | ${'test.dotx'} | ${'file-word-o'}
-    ${'file'}   | ${'test.xlsb'} | ${'file-excel-o'}
-    ${'file'}   | ${'test.ppam'} | ${'file-powerpoint-o'}
-    ${'file'}   | ${'test.js'}   | ${'file-text-o'}
-  `('returns $icon for $type with path $path', ({ type, path, icon }) => {
-    expect(getIconName(type, path)).toEqual(icon);
-  });
-});