Fix service configuration

[z38]

With symfony/symfony#22185 (^3.3), named keys in service configuration files are no longer silently ignored. Now, the following exception is thrown:

[Symfony\Component\DependencyInjection\Exception\InvalidArgumentException]        
Invalid key "event_dispatcher" found in arguments of method "__construct()" for
service "tmdb.configuration": only integer or $named arguments are allowed.

As they keys were ignored anyway, it's safe to remove them.

[yukoff]

+1 @wtfzdotnet This also should go to 2.1 and I guess it's time to merge 2.0 and 2.1 into master? ;)

[yukoff]

This one related to symfony/symfony#22979.

A quote form this comment:

Iirc, using the key like this was meaningless before 3.3 - it just added this as the first argument. We made this explicitly illegal in 3.3 - so you should just remove this. But, it is a minor BC break.