onnxruntime

a47254ea - Remove empty (DQ -> Q -> graph output) sequence in TransposeOptimizer (#22172)

Remove empty (DQ -> Q -> graph output) sequence in TransposeOptimizer (#22172) ### Description Updates the TransposeOptimizer to also remove empty (DQ -> Q) sequences that occur at a graph output. An empty DQ->Q sequence results from a Transpose being optimized out. Consider the following example model:  The TransposeOptimizer removes the final Transpose and leaves an empty DQ->Q->output_0 sequence. This PR ensures that the final DQ->Q is also removed. ### Motivation and Context Models with quantized output can run on QNN EP. The inference latency of a customer model is impacted by the unnecessary DQ->Q sequence at the output. --------- Co-authored-by: Scott McKay <skottmckay@gmail.com>