removes reliance on useAsTitle

src/errors/MissingUseAsTitle.js

@@ -1,9 +0,0 @@
-const APIError = require('./APIError');
-
-class MissingUseAsTitle extends APIError {
-  constructor(collection) {
-    super(`${collection.labels.singular} collection is missing a useAsTitle property.`);
-  }
-}
-
-module.exports = MissingUseAsTitle;

src/errors/index.js

@@ -4,7 +4,6 @@ const DuplicateCollection = require('./DuplicateCollection');
 const DuplicateGlobal = require('./DuplicateGlobal');
 const MissingCollectionLabel = require('./MissingCollectionLabel');
 const MissingGlobalLabel = require('./MissingGlobalLabel');
-const MissingUseAsTitle = require('./MissingUseAsTitle');
 const NotFound = require('./NotFound');
 const Forbidden = require('./Forbidden');
 const ValidationError = require('./ValidationError');
@@ -17,7 +16,6 @@ module.exports = {
   DuplicateGlobal,
   MissingCollectionLabel,
   MissingGlobalLabel,
-  MissingUseAsTitle,
   NotFound,
   Forbidden,
   ValidationError,