[DependencyInjection] removed unused vars

src/Symfony/Component/DependencyInjection/Compiler/Compiler.php

@@ -105,7 +105,6 @@ class Compiler
      */
     public function compile(ContainerBuilder $container)
     {
-        $start = microtime(true);
         foreach ($this->passConfig->getPasses() as $pass) {
             $pass->process($container);
         }

src/Symfony/Component/DependencyInjection/Compiler/RepeatedPass.php

@@ -51,7 +51,6 @@ class RepeatedPass implements CompilerPassInterface
         $compiler = $container->getCompiler();
         $this->repeat = false;
         foreach ($this->passes as $pass) {
-            $time = microtime(true);
             $pass->process($container);
         }