Remove SparseTensor support from minimal build. (#5114)
* Remove SparseTensor support from minimal build.
Currently the only valid usage of a SparseTensor is as an attribute of a Constant node. That would have been lifted to a dense tensor initializer when loading the onnx model, so would not exist when saving the ORT format model. Due to that there can be no SparseTensors in an ORT format model.
Co-authored-by: gwang <wanggy@outlook.com>
