refactor(create-app): remove useless extras

packages/create-app/.eslintrc.js

@@ -1,6 +1,5 @@
 module.exports = {
   extends: [require.resolve('@backstage/cli/config/eslint.backend')],
-  ignorePatterns: ['templates/**'],
   rules: {
     'no-console': 0,
   },

packages/create-app/README.md

@@ -1,6 +1,7 @@
 # @backstage/create-app
 
 This package provides a CLI for creating apps.
+You can use the flag `--skip-install` to skip the install.
 
 ## Installation
 

packages/create-app/package.json

@@ -36,9 +36,5 @@
     "@types/recursive-readdir": "^2.2.0",
     "@types/ora": "^3.2.0",
     "ts-node": "^8.6.2"
-  },
-  "nodemonConfig": {
-    "watch": "./src",
-    "ext": "ts"
   }
 }