Breaking Change: Remove the deprecated int8 calibrator related

[lanluo-nvidia]

Description

Remove all the int8 calibrator, int8 implicit quantization and dynamic range related.
All the quantization should be explicit.

Fixes # (issue)

Type of change

Please delete options that are not relevant and/or add your own.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project (You can use the linters)
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas and hacks
• I have made corresponding changes to the documentation
• I have added tests to verify my fix or my feature
• New and existing unit tests pass locally with my changes
• I have added the relevant labels to my PR in so that relevant reviewers are notified

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[narendasan]

Mostly looks good, if the fx changes still work I would leave those since Meta might still be using them.

[zewenli98]

LGTM. just a minor comment

[zewenli98]

Any reasons for partially replacing import lib?

[narendasan]

Its looking good, only thing is if we are switching to dynamo.types.TRTTensor we should just go to trt.ITensor and be closer to removing that types file. Dont think I need to review again after those changes

[zewenli98]

LGTM. I think we can directly use trt.ITensor instead of alias, but it doesn't matter. that's fine for now

[zewenli98]

An error pops up.

E   ImportError: cannot import name 'Frameworks' from 'torch_tensorrt.dynamo.conversion.converter_utils'

you can import from torch_tensorrt.dynamo.utils