remove env option

Author: dblythy

src/Options/Definitions.js

@@ -878,7 +878,6 @@ module.exports.DatabaseOptions = {
 };
 module.exports.AuthAdapter = {
   enabled: {
-    env: 'undefinedENABLED',
     help: 'Is `true` if the auth adapter is enabled, `false` otherwise.',
     action: parsers.booleanParser,
     default: true,

src/Options/index.js

@@ -509,6 +509,8 @@ export interface DatabaseOptions {
 
 export interface AuthAdapter {
   /* Is `true` if the auth adapter is enabled, `false` otherwise.
-  :DEFAULT: true */
+  :DEFAULT: true
+  :ENV:
+  */
   enabled: ?boolean;
 }