diff --git a/coverage-map.js b/coverage-map.js
deleted file mode 100644
index ca58935a..00000000
--- a/coverage-map.js
+++ /dev/null
@@ -1,9 +0,0 @@
-'use strict'
-
-module.exports = testFile => {
-  // Ignore coverage on files that do not have a direct corollary.
-  if (testFile.startsWith('test/')) return false
-
-  // Indicate the matching name, sans '.test.js', should be checked for coverage.
-  return testFile.replace(/\.test\.js$/, '.js')
-}