remove .eslintrc.js because migrate-mongo will handle

apps/app/src/migrations/.eslintrc.js

@@ -1,12 +0,0 @@
-module.exports = {
-  extends: '../../.eslintrc.js',
-  rules: {
-    // restrict importing from client/ and components/ directories
-    'no-restricted-imports': ['error', {
-      patterns: [
-        '~/client/',
-        'client/',
-      ],
-    }],
-  },
-};