diff --git a/lib/config/fetch-opts.js b/lib/config/fetch-opts.js
deleted file mode 100644
index 213c293d6c7c9..0000000000000
--- a/lib/config/fetch-opts.js
+++ /dev/null
@@ -1,77 +0,0 @@
-'use strict'
-
-const url = require('url')
-
-module.exports.fromPacote = fromPacote
-
-function fromPacote (opts) {
-  return {
-    cache: getCacheMode(opts),
-    cacheManager: opts.cache,
-    ca: opts.ca,
-    cert: opts.cert,
-    headers: getHeaders('', opts.registry, opts),
-    key: opts.key,
-    localAddress: opts.localAddress,
-    maxSockets: opts.maxSockets,
-    proxy: opts.proxy,
-    referer: opts.refer,
-    retry: opts.retry,
-    strictSSL: !!opts.strictSSL,
-    timeout: opts.timeout,
-    uid: opts.uid,
-    gid: opts.gid
-  }
-}
-
-function getCacheMode (opts) {
-  return opts.offline
-    ? 'only-if-cached'
-    : opts.preferOffline
-      ? 'force-cache'
-      : opts.preferOnline
-        ? 'no-cache'
-        : 'default'
-}
-
-function getHeaders (uri, registry, opts) {
-  const headers = Object.assign({
-    'npm-in-ci': opts.isFromCI,
-    'npm-scope': opts.projectScope,
-    'npm-session': opts.npmSession,
-    'user-agent': opts.userAgent,
-    'referer': opts.refer
-  }, opts.headers)
-  // check for auth settings specific to this registry
-  let auth = (
-    opts.auth &&
-    opts.auth[registryKey(registry)]
-  ) || opts.auth
-  // If a tarball is hosted on a different place than the manifest, only send
-  // credentials on `alwaysAuth`
-  const shouldAuth = auth && (
-    auth.alwaysAuth ||
-    url.parse(uri).host === url.parse(registry).host
-  )
-  if (shouldAuth && auth.token) {
-    headers.authorization = `Bearer ${auth.token}`
-  } else if (shouldAuth && auth.username && auth.password) {
-    const encoded = Buffer.from(
-      `${auth.username}:${auth.password}`, 'utf8'
-    ).toString('base64')
-    headers.authorization = `Basic ${encoded}`
-  } else if (shouldAuth && auth._auth) {
-    headers.authorization = `Basic ${auth._auth}`
-  }
-  return headers
-}
-
-function registryKey (registry) {
-  const parsed = url.parse(registry)
-  const formatted = url.format({
-    host: parsed.host,
-    pathname: parsed.pathname,
-    slashes: parsed.slashes
-  })
-  return url.resolve(formatted, '.')
-}