Remove deprecated code for next v0.9

[Borda]

🚀 Feature

Let's start standard deprecated API cleaning and also split it into smaller contributions that are not affecting each other, and they are easier/faster to review... So each of the following ToDO shall be addressed in a single PR.
Before you start working on any, pls ping/comment us here so we can assign it to you to reduce work collision 🐰

Motivation

Regular API cleaning of deprecated API keeping the codebase in a healthy state

Pitch

Ideal hands-on / first contribution because of its low complexity 💜

Alternatives

• compute_on_step in aggregation -> Remove compute_on_step from aggregation and tests #990
• compute_on_step in audio -> Removed Deprecated compute_on_step from audio #1007
• compute_on_step in classification -> Removed Deprecated compute_on_step from Classification #962
• compute_on_step in detection -> Remove compute_on_step from detection #1005
• compute_on_step in image -> remove deprecated compute_on_step from torchmetrics/image #979
• compute_on_step in regression -> Remove deprecated compute_on_step in Regression #967
• compute_on_step in retrival -> remove compute_on_step in torchmetrics/retrieval #993
• compute_on_step in text -> Remove compute_on_step from text #1004
• compute_on_step in wrappers -> Remove compute_on_step from wrappers #991

Additional context

[tanmoyio]

compute_on_step in classification 🖐

[tanmoyio]

compute_on_step in audio 🖐

[vumichien]

I will work on compute_on_step in regression

[phaseolud]

Hey, I would like to work on compute_on_step in image, is that possible?

[stancld]

Hey, I would like to work on compute_on_step in image, is that possible?

Yes, definitely! Feel free to start! :]

[phaseolud]

I would like to pick up retrieval as well! 😄

[SkafteNicki]

@tanmoyio how is it going with the change for audio?

[tanmoyio]

@tanmoyio sorry I was in vacation, I will do it today.

[Borda]

Cool! 🎉 Thank you all!