Remove monkeypatching dead code

lib/analyze-scope.js

@@ -327,11 +327,6 @@ module.exports = function(ast, parserOptions) {
     fallback,
   };
 
-  if (OriginalReferencer._babelEslintPatched) {
-    require("./patch-eslint-scope")(parserOptions);
-    return escope.analyze(ast, options);
-  }
-
   options.childVisitorKeys = childVisitorKeys;
 
   const scopeManager = new escope.ScopeManager(options);

package.json

@@ -14,7 +14,7 @@
   "homepage": "https://github.com/babel/babel-eslint",
   "scripts": {
     "test": "npm run lint && npm run test-only",
-    "test-only": "cd test && mocha --require fixtures/preprocess-to-patch.js specs && cd -",
+    "test-only": "cd test && mocha specs && cd -",
     "lint": "eslint .",
     "lint-fix": "npm run lint -- --fix",
     "precommit": "lint-staged",

test/specs/integration.js

@@ -223,3 +223,14 @@ function strictSuite() {
     // it
   });
 }
+
+describe("https://github.com/babel/babel-eslint/issues/558", () => {
+  it("doesn't crash with eslint-plugin-import", () => {
+    const engine = new eslint.CLIEngine({ ignore: false });
+    engine.executeOnFiles([
+      "fixtures/eslint-plugin-import/a.js",
+      "fixtures/eslint-plugin-import/b.js",
+      "fixtures/eslint-plugin-import/c.js",
+    ]);
+  });
+});