build(deps): Remove unstructured.paddlepaddle fork (#3506)
This PR aims to remove "unstructured.paddlepaddle" fork. Previously, we
used `unstructured.paddlepaddle` fork to support
`unstructured.paddleocr` on arm64 architecture. But currently,
`unstructured.paddleocr` with `unstructured.paddlepaddle` fails to work
on `arm64` architecture. Also, `unstructured.paddleocr` with the latest
version of the original `paddlepaddle` works on both `amd64` and `arm64`
architectures.
### Testing
```
os.environ["OCR_AGENT"] = "unstructured.partition.utils.ocr_models.paddle_ocr.OCRAgentPaddle"
elements = partition_pdf(
filename=<file_path>,
strategy="hi_res",
infer_table_structure=True,
)
```
