NetDelete
NetDelete[net,n] deletes the nth layer from a NetChain or NetGraph.
NetDelete[net,"name"] deletes a named layer.
NetDelete[net,{spec1,spec2,…}] deletes several layers simultaneously.
NetDelete[graph,NetPort["name"]] deletes an output or state-input port from a NetGraph.
NetDelete[graph,{NetPort[name1],NetPort[name2],…}] deletes several output or state-input ports simultaneously.
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