fix: remove cors from schema as it's already covered

Author: theburningmonk

lib/package/s3/schema.js

@@ -24,8 +24,7 @@ const key = Joi.alternatives().try([
 const schema = Joi.object().keys({
   action: action.required(),
   bucket: bucket.required(),
-  key: key.required(),
-  cors: Joi.boolean().default(false)
+  key: key.required()
 })
 
 module.exports = schema