Remove deprecated code from image domain

[SkafteNicki]

What does this PR do?

Fixes part of #771

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[Borda]

add chlog with removal

[SkafteNicki]

@Borda integration test are failing due to torchmetrics.PSNR no longer being available and older lightning versions are referring to it

[Borda]

@Borda integration test are failing due to torchmetrics.PSNR no longer being available and older lightning versions are referring to it

so shall we keep this deprecation?

[justusschock]

Personally, wouldn't keep it. If we keep it, we should keep them all, I think and extend the deprecation phase. Which Lightning Version is it?

[SkafteNicki]

If we keep it, we would only support lightning 1.5 as that release removed metrics completely.
We could do it similar to torchvision and torch compatibility:

• 1.3 < PL < 1.5 means TM < 0.8
• 1.5 < PL means 0.8 <= TM

[Borda]

If we keep it

you mean if we remove deprecated metrics, right?

[SkafteNicki]

If we keep it

you mean if we remove deprecated metrics, right?

Yes :]

[codecov]

Codecov Report

Merging #796 (7fdf634) into master (b225889) will increase coverage by 0%.
The diff coverage is 100%.

@@          Coverage Diff          @@
##           master   #796   +/-   ##
=====================================
  Coverage      95%    95%           
=====================================
  Files         166    165    -1     
  Lines        6827   6776   -51     
=====================================
- Hits         6452   6427   -25     
+ Misses        375    349   -26