Remove `check_requirements(('tensorflow>=2.4.1',))` (#5476)

`check_requirements()` is unreliable for large packages like torch and tensorflow that may have multiple installation routes (i.e. conda, pip, tensorflow-cpu, etc.)

Remove `check_requirements(('tensorflow>=2.4.1',))` (#5476)
0eb37ad8 · Glenn Jocher · GitHub · 042f02ff · 0eb37ad8
--- a/detect.py
+++ b/detect.py
@@ -94,7 +94,6 @@ def run(weights=ROOT / 'yolov5s.pt',  # model.pt path(s)
            import onnxruntime
            session = onnxruntime.InferenceSession(w, None)
    else:  # TensorFlow models
-        check_requirements(('tensorflow>=2.4.1',))
        import tensorflow as tf
        if pb:  # https://www.tensorflow.org/guide/migrate#a_graphpb_or_graphpbtxt
            def wrap_frozen_graph(gd, inputs, outputs):