onnxruntime

948bba1a - [QNN-EP] Remove outdated comment for per-channel quantization (#26523)

[QNN-EP] Remove outdated comment for per-channel quantization (#26523) ### Description <!-- Describe your changes. --> Conv2D supports per-channel uint8 quantized weights since QNN SDK 2.36. This PR updates outdated comments related to signed quantization checks for Conv. The check itself was removed in #25986 , which has been merged. ### Motivation and Context <!-- - Why is this change required? What problem does it solve? - If it fixes an open issue, please link to the issue here. --> #25986 Co-authored-by: -qti <@qti.qualcomm.com>