Remove little endian asserts (#99713)
They block tests test_embedding_bag_2bit_unpack,
test_embedding_bag_4bit_unpack and test_embedding_bag_byte_unpack in test/quantization/core/test_quantized_op.py.
Without these asserts tests start passing on big endian systems.
Fixes #97803
Pull Request resolved: https://github.com/pytorch/pytorch/pull/99713
Approved by: https://github.com/kit1980