Revert "Put KERNEL_CLASS to environment if it was not there yet (#184)"

This reverts commit 24078d9.

Author: ElectricMaxxx

CHANGELOG.md

@@ -1,21 +1,8 @@
 Changelog
 =========
 
-2.1.3
------
- * **2018-06-30**: Use KERNEL_DIR for backward compatibility only
- * **2018-06-29**: Setting KERNEL_CLASS from phpunit.xml.dist during bootstrapping console command
-
-2.1.2
------
- * **2018-06-29**: Read KERNEL_DIR and KERNEL_CLASS from phpunit.xml.dist for console commands
-
-2.1.1
------
- * **2018-06-23**: Passing command line as array to Process for newer Symfony versions only
-
-2.1.0
------
+2.1.0 (unreleased)
+------------------
 
 * **2017-01-18**: Introduce a `TestCompilePass` to make services public, which are needed 
 in i.e. a WebTest.

bootstrap/kernel_bootstrap.php

@@ -29,7 +29,6 @@
 $envClass = $xml->xpath("//php/env[@name='KERNEL_CLASS']");
 if (count($envClass)) {
     $kernelClass = (string) $envClass[0]['value'];
-    putenv(sprintf('KERNEL_CLASS=%s', $kernelClass));
 } else {
     $envDir = $xml->xpath("//php/server[@name='KERNEL_DIR']");
     if (!count($envDir)) {