drop async compile

Author: goto-bus-stop

index.js

@@ -1,7 +1,3 @@
 #!/usr/bin/env node
 
-if (!require('is-async-supported')()) {
-  require('async-to-gen/register')
-}
-
 require('./src/cli')

package-lock.json

@@ -6,10 +6,9 @@
   "repository": "extplug/replug",
   "bin": "./index.js",
   "engines": {
-    "node": ">= 7.7"
+    "node": ">= 8.9"
   },
   "dependencies": {
-    "async-to-gen": "^1.3.2",
     "babel-plugin-transform-beautifier": "^0.1.0",
     "babel-traverse": "^7.0.0-alpha.12",
     "babel-types": "^7.0.0-alpha.12",
@@ -19,7 +18,6 @@
     "chalk": "^2.0.1",
     "commander": "^2.11.0",
     "got": "^8.0.0",
-    "is-async-supported": "^1.2.0",
     "jsdom": "^11.1.0",
     "listr": "^0.13.0",
     "listr-update-renderer": "^0.4.0",