cleanup barrel file in implicit-modules

Author: ef4

lib/index.js

@@ -154,7 +154,6 @@ const shim = addonV1Shim(path.join(__dirname, '..'), {
           './dist/dev/packages/@simple-dom/document/index.js',
           './dist/dev/packages/backburner.js/index.js',
           './dist/dev/packages/dag-map/index.js',
-          './dist/dev/packages/ember/index.js',
           './dist/dev/packages/ember/version.js',
           './dist/dev/packages/route-recognizer/index.js',
           './dist/dev/packages/router_js/index.js',