chore: Removed deprecated .AddHttpCorrelation

[Roeland54]

resolves #308

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[stijnmoreels]

The build is failing bc the integration tests still include the Hierarchical HTTP correlation.

[Roeland54]

I try to understand what is going on with the integrations tests. So if I understand correctly the deprecated method used hierarchical http correlation but the method that is replacing it is currently using W3C correlation.
So the unit tests that test hierarchical correlation fail now because of that.
So the the hierarchical correlation tests can be removed because this functionality is not supported anymore. And no new tests need to be written because W3C correlation is already covered by tests.

Conclusion I can remove the tests?

[stijnmoreels]

Conclusion I can remove the tests?

Yes, those specific ones could be removed safely as we have similar tests for the updated HTTP correlation option where the Hierarchical format is specifically set (as in those tests, the updated HTTP correlation options is used where W3C is the default).