Remove Apache license from API client generators (#4197)

* remove php apache license

* remove apache license from C#

* remove apache license in objc code

* remove license from swift 3 code

* remove apache license from perl code

* remove license from scala code

* remove license from ts, go, android, cpp, scala

* remove license from java api client

* restore clojure petstore files

* remove license from travis file

* clean up apache-related terms in php, ruby, python mustache tempaltes

* remove license from JS API cilent

samples/client/petstore/php/SwaggerClient-php/lib/ApiClient.php

@@ -6,8 +6,7 @@
  *
  * @category Class
  * @package  Swagger\Client
- * @author   http://github.com/swagger-api/swagger-codegen
- * @license  http://www.apache.org/licenses/LICENSE-2.0 Apache License v2
+ * @author   Swagger Codegen team
  * @link     https://github.com/swagger-api/swagger-codegen
  */
 
@@ -20,17 +19,6 @@
  * Contact: apiteam@swagger.io
  * Generated by: https://github.com/swagger-api/swagger-codegen.git
  *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
  */
 
 /**
@@ -46,8 +34,7 @@ namespace Swagger\Client;
  *
  * @category Class
  * @package  Swagger\Client
- * @author   http://github.com/swagger-api/swagger-codegen
- * @license  http://www.apache.org/licenses/LICENSE-2.0 Apache License v2
+ * @author   Swagger Codegen team
  * @link     https://github.com/swagger-api/swagger-codegen
  */
 class ApiClient