book: delete architecture/layers

doc/src/SUMMARY.md

@@ -9,7 +9,6 @@
 - [Port ranges](portranges.md)
 - [Architecture](architecture/architecture.md)
   - [Overview](architecture/overview.md)
-  - [Layers](architecture/layers.md)
   - [Anonymous Assets](architecture/anonymous_assets.md)
   - [Blockchain](architecture/blockchain.md)
   - [DNA](architecture/dna.md)

doc/src/architecture/layers.md

@@ -1,17 +0,0 @@
-# Layers
-
-* **system/** contains core functionality, types and utilities.
-* **net/** is the p2p networking base layer.
-* **service/** any services such as the cashier or gateways.
-* **zk/** is the zk virtual machine and related zk code.
-* **zkas/** is the zk assembly language and compiler.
-* **crypto/** for the merkle tree classes and other crypto primitives.
-* **node/** is a fully working darkfi node.
-* **wallet/** key generation and management features such as derivation and storage.
-* **tx/** for the transaction builder.
-* **blockchain/** blockchain database functionality and state transition.
-* **consensus/** implementation of the streamlet consensus algorithm.
-* **rpc/** interface for remote procedure calls, includes adapter to interface with the node backend and the default jsonrpc transport mechanism.
-* **util/** various utilities.
-
-