Remove Blazor Server template

[surayya-MS]

Remove Blazor Server template

Part of #48341

[javiercn]

Looks good to me.

@SteveSandersonMS @danroth27 any thoughts before we merge?

We should coordinate this removal with lighting up the equivalent option using full stack Blazor.

[SteveSandersonMS]

Looks great to me too.

As for shipping this change in preview 6, where are we currently with the universal Blazor web template? Is that already sufficient to replace the Blazor Server template? Will people be able to File->New and pick some options in the wizard, then F5 to run without having to make various code edits to get Blazor Server-type functionality?

I think we would not want to have a preview release in which there isn't an easy way to create a Blazor Server project, as that's core to the product experience and the ability to try out preview features. As long as the universal template has already reached the stage that it's trivial to get a classic Blazor Server project out of it, then I think we're good. But if not then it might be premature to actually remove the old template from the SDK.

We should coordinate this removal with lighting up the equivalent option using full stack Blazor.

Update: Yes, looks like that sentence was added afterwards, and confirms we're thinking on the same lines.

[ghost]

Looks like this PR hasn't been active for some time and the codebase could have been changed in the meantime.
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