Remove JAX constraints in Exporter (#8309)

.github/workflows/ci.yaml

@@ -113,8 +113,6 @@ jobs:
         run: |
           python -m pip install --upgrade pip wheel
           pip install -e ".[export]" "coverage[toml]" --extra-index-url https://download.pytorch.org/whl/cpu
-          # Fix SavedModel issue "partially initialized module 'jax' has no attribute 'version' (most likely due to a circular import)" in https://github.com/google/jax/discussions/14036
-          # pip install -U 'jax!=0.4.15' 'jaxlib!=0.4.15'
           yolo export format=tflite imgsz=32 || true
       - name: Check environment
         run: |

ultralytics/engine/exporter.py

@@ -860,8 +860,7 @@ class Exporter:
     @try_export
     def export_tfjs(self, prefix=colorstr("TensorFlow.js:")):
         """YOLOv8 TensorFlow.js export."""
-        # JAX bug requiring install constraints in https://github.com/google/jax/issues/18978
-        check_requirements(["jax<=0.4.21", "jaxlib<=0.4.21", "tensorflowjs"])
+        check_requirements("tensorflowjs")
         import tensorflow as tf
         import tensorflowjs as tfjs  # noqa