## What does this PR do?
**Type of change:**
Minor code change
**Overview:**
- Delete backbone after Device Model creation
- Add assertion for torch compile
- Update dummy input generation function
## Testing
```
python diffusion_trt.py --model flux-dev --benchmark --skip-image
python diffusion_trt.py --model flux-dev --benchmark --skip-image --restore-from ./flux_dev_fp8_autodeploy_fake.pt
python diffusion_trt.py --model flux-dev --benchmark --skip-image --restore-from ./flux_dev_fp4_autodeploy_fake.pt
python diffusion_trt.py --model flux-dev --benchmark --skip-image --torch
python diffusion_trt.py --model flux-dev --benchmark --skip-image --restore-from ./flux_dev_fp8_autodeploy_fake.pt --torch
python diffusion_trt.py --model flux-dev --benchmark --skip-image --restore-from ./flux_dev_fp4_autodeploy_fake.pt --torch
python diffusion_trt.py --model flux-dev --benchmark --skip-image --torch --torch-compile
```
## Before your PR is "*Ready for review*"
<!-- If you haven't finished some of the above items you can still open
`Draft` PR. -->
- **Make sure you read and follow [Contributor
guidelines](https://github.com/NVIDIA/TensorRT-Model-Optimizer/blob/main/CONTRIBUTING.md)**
and your commits are signed.
- **Is this change backward compatible?**: Yes
- **Did you write any new necessary tests?**: No
- **Did you add or update any necessary documentation?**: No
- **Did you update
[Changelog](https://github.com/NVIDIA/TensorRT-Model-Optimizer/blob/main/CHANGELOG.rst)?**:
No <!--- Only for new features, API changes, critical bug fixes or bw
breaking changes. -->
---------
Signed-off-by: ajrasane <131806219+ajrasane@users.noreply.github.com>
ajrasane