Remove no longer needed helper file

h/static/scripts/filter/document-title.js

-'use strict';
-
-var escapeHtml  = require('escape-html');
-
-/**
- * Return a nice displayable string representation of a document's title.
- *
- * @returns {String} The document's title preceded on "on " and hyperlinked
- *   to the document's URI. If the document has no http(s) URI then don't
- *   hyperlink the title. If the document has no title then return ''.
- *
- */
-module.exports = function documentTitle(document) {
-  var title = escapeHtml(document.title || '');
-  var uri = escapeHtml(document.uri || '');
-
-  if (uri && !(uri.indexOf('http://') === 0 || uri.indexOf('https://') === 0)) {
-    // We only link to http(s) URLs.
-    uri = null;
-  }
-
-  if (title && uri) {
-    return ('on &ldquo;<a target="_blank" href="' + uri + '">' + title +
-            '</a>&rdquo;');
-  } else if (title) {
-    return 'on &ldquo;' + title + '&rdquo;';
-  } else {
-    return '';
-  }
-};

h/static/scripts/filter/test/document-title-test.js

-'use strict';
-
-var documentTitle = require('../document-title');
-
-describe('documentTitle', function() {
-
-  it('returns the title linked if the document has title and uri', function() {
-    var title = documentTitle({
-      title: 'title',
-      uri: 'http://example.com/example.html'
-    });
-
-    assert(title === 'on &ldquo;<a target="_blank" ' +
-                     'href="http://example.com/example.html">' +
-                     'title</a>&rdquo;');
-  });
-
-  it('returns the title linked if the document has an https uri', function() {
-    var title = documentTitle({
-      title: 'title',
-      uri: 'https://example.com/example.html'
-    });
-
-    assert(title === 'on &ldquo;<a target="_blank" '+
-                     'href="https://example.com/example.html">' +
-                     'title</a>&rdquo;');
-  });
-
-  it('returns the title unlinked if doc has title but no uri', function() {
-    var title = documentTitle({
-      title: 'title',
-    });
-
-    assert(title === 'on &ldquo;title&rdquo;');
-  });
-
-  it('returns the title unlinked if doc has non-http uri', function() {
-    var title = documentTitle({
-      title: 'title',
-      uri: 'file:///home/bob/Documents/example.pdf'
-    });
-
-    assert(title === 'on &ldquo;title&rdquo;');
-  });
-
-  it('returns an empty string if the document has no title', function() {
-    var title = documentTitle({
-      uri: 'http://example.com/example.html'
-    });
-
-    assert(title === '');
-  });
-
-  it('escapes HTML in the document title', function() {
-    var spamLink = '<a href="http://example.com/rubies">Buy rubies!!!</a>';
-
-    var title = documentTitle({
-      title: '</a>' + spamLink,
-      uri: 'http://example.com/example.html'
-    });
-
-    assert(title.indexOf(spamLink) === -1);
-  });
-
-  it('escapes HTML in the document URI', function() {
-    var spamLink = '<a href="http://example.com/rubies">Buy rubies!!!</a>';
-
-    var title = documentTitle({
-      uri: 'http://</a>' + spamLink,
-      title: 'title'
-    });
-
-    assert(title.indexOf(spamLink) === -1);
-  });
-});