remove deprecated file

[nyamsprod]

resolve issue #19

This should make the package composer 2.0 ready @rulatir could you confirm that this is the expected behavior

[galvani]

@nyamsprod Is this going to be merged?

[nyamsprod]

@galvani

First and foremost This PR is for an unsupported version so since I am still waiting for the OP to confirm that the changes do work nothing will be merged and honestly the more I wait and still have no answer the less this PR is likely to get merged. This is an open source project and I'm only working on it when I have time.

So yes it might get merged once everything has been green-lighted and when I have the time to do so.

I would suggest that a better way to approach this would be to help OP in testing yourself if the changes work as expected with composer 2.0 or an even better solution would be to use the latest URI package which exposes the same API and is actively maintained and has no issue with composer v2.0