minor symfony#16992 [FrameworkBundle][HttpKernel] Remove remaining $triggerDeprecation flag (ogizanagi)

This PR was merged into the 3.0 branch.

Discussion
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[FrameworkBundle][HttpKernel] Remove remaining $triggerDeprecation flag

| Q             | A
| ------------- | ---
| Fixed tickets | n/a
| License       | MIT

Introduced in symfony#14665, this flag controlled the deprecation notice triggering when using the `ContainerAwareHttpKernel`, in order to avoid triggering it when using this class in the Symfony framework. This class no longer exists now, neither the flag.

Commits
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ac15454 [FrameworkBundle][HttpKernel] Remove remaining $triggerDeprecation flag

Author: Tobion

src/Symfony/Bundle/FrameworkBundle/Resources/config/services.xml

@@ -13,7 +13,6 @@
             <argument type="service" id="event_dispatcher" />
             <argument type="service" id="controller_resolver" />
             <argument type="service" id="request_stack" />
-            <argument>false</argument>
         </service>
 
         <service id="request_stack" class="Symfony\Component\HttpFoundation\RequestStack" />