chore: Removed a deprecated package from intro and linked to our example applications and next.js and apollo server packages

[bizob2828]

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Give us some context

• What problems does this PR solve?
• Our team maintains example apps so you can see both stock and custom instrumentaiton in action. We have some direct links to examples but I thought it'd be good to link this on the intro page. Same goes for our apollo server plugin and next.js instrumentation. We get common questions around support for these and since they don't ship with our node agent, people sometimes don't know they exist. There are links throughout the Node.js section of docs linking these but not in the intro page.

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