Stop hard-coding this package's version in its files

Author: forevermatt

README.md

@@ -5,7 +5,6 @@ This PHP package is automatically generated by the
 [Swagger Codegen](https://github.com/swagger-api/swagger-codegen) project:
 
 - API version: 0.2.0
-- Package version: 0.2.0
 - Build package: io.swagger.codegen.v3.generators.php.PhpClientCodegen
 
 ## Requirements

lib/Configuration.php

@@ -396,7 +396,6 @@ public static function toDebugReport()
         $report .= '    OS: ' . php_uname() . PHP_EOL;
         $report .= '    PHP Version: ' . PHP_VERSION . PHP_EOL;
         $report .= '    OpenAPI Spec Version: 0.2.0' . PHP_EOL;
-        $report .= '    SDK Package Version: 0.1.0' . PHP_EOL;
         $report .= '    Temp Folder Path: ' . self::getDefaultConfiguration()->getTempFolderPath() . PHP_EOL;
 
         return $report;