Removing Inmar from Prebid - No longer supported

[prashuc]

🏷 Type of documentation

• new bid adapter
• update bid adapter
• new feature
• text edit only (wording, typos)
• bugfix (code examples)
• new examples

📋 Checklist

• Related pull requests in prebid.js or server are linked
• For new adapters check submitting your adapter docs

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[bretg]

Sorry, we can't let you delete the documentation -- the code is still in the main repo. Please update this PR:

• put a note at the top that says something like "no longer supported"
• add the enable_download: false header. That will take it off the download page
• submit a PR to remove the code from the main Prebid.js repo

[prashuc]

@bretg - updated the PR title (no longer supported). Also we already submitted PR for removing code from main Prebid.js repo (prebid/Prebid.js#8913).

[bretg]

The way we handle adapter removals is that we flag them as not downloadable or supported rather than removing them. Then in a major release (e.g. 8.0), then the docs can be removed.

It could be headscratching for a publisher using your adapter to have the docs suddenly disappear.

I'm going to close this PR and make one that gives such publishers a transition period.