* add interface InferContext::InputShape

* delete repeated interface calling in dropout_op.cpp

* refactor_infer_ctx_output_shape

* auto format by CI

Co-authored-by: lixinqi <lixinqi0703106@163.com>
Co-authored-by: oneflow-ci-bot <ci-bot@oneflow.org>
Co-authored-by: oneflow-ci-bot <69100618+oneflow-ci-bot@users.noreply.github.com>