Remove duplicate changelog entries

Author: jdreesen

CHANGELOG.md

@@ -6,8 +6,6 @@ CHANGELOG
 
  * Removed `doctrine/cache` from the list of required dependencies in `composer.json`
  * Deprecated `validator.mapping.cache.doctrine.apc` service
- * Deprecated using the `KERNEL_DIR` environment variable with `KernelTestCase::getKernelClass()`.
- * Deprecated the `KernelTestCase::getPhpUnitXmlDir()` and `KernelTestCase::getPhpUnitCliConfigArgument()` methods.
  * The `symfony/stopwatch` dependency has been removed, require it via `composer
    require symfony/stopwatch` in your `dev` environment.
  * Deprecated using the `KERNEL_DIR` environment variable with `KernelTestCase::getKernelClass()`.