remove redundant documents from /docs

diff --git a/docs/etcd.md b/docs/etcd.md
deleted file mode 100644
index bf1a829..0000000
--- a/docs/etcd.md
+++ /dev/null
@@ -1,85 +0,0 @@
-# Experimental etcd support in LND
-
-With the recent introduction of the `kvdb` interface LND can support multiple
-database backends allowing experimentation with the storage model as well as
-improving robustness through e.g. replicating essential data.
-
-Building on `kvdb` in v0.11.0 we're adding experimental [etcd](https://etcd.io)
-support to LND. As this is an unstable feature heavily in development, it still
-has *many* rough edges for the time being. It is therefore highly recommended to
-not use LND on `etcd` in any kind of production environment especially not
-on bitcoin mainnet.
-
-## Building LND with etcd support
-
-To create a dev build of LND with etcd support use the following command:
-
-```shell
-$  make tags="kvdb_etcd"
-```
-
-The important tag is the `kvdb_etcd`, without which the binary is built without
-the etcd driver.
-
-For development, it is advised to set the `GOFLAGS` environment variable to 
-`"-tags=test"` otherwise `gopls` won't work on code in `channeldb/kvdb/etcd`
-directory.
-
-## Running a local etcd instance for testing
-
-To start your local etcd instance for testing run:
-
-```shell
-$  ./etcd \
-    --auto-tls \
-    --advertise-client-urls=https://127.0.0.1:2379 \
-    --listen-client-urls=https://0.0.0.0:2379 \
-    --max-txn-ops=16384 \
-    --max-request-bytes=104857600
-```
-
-The large `max-txn-ops` and `max-request-bytes` values are currently required in
-case of running LND with the full graph in etcd. These parameters have been
-tested to work with testnet LND.
-
-## Configuring LND to run on etcd
-
-To run LND with etcd, additional configuration is needed, specified either
-through command line flags or in `lnd.conf`.
-
-Sample command line:
-
-```shell
-$  ./lnd-debug \
-    --db.backend=etcd \
-    --db.etcd.host=127.0.0.1:2379 \
-    --db.etcd.certfile=/home/user/etcd/bin/default.etcd/fixtures/client/cert.pem \
-    --db.etcd.keyfile=/home/user/etcd/bin/default.etcd/fixtures/client/key.pem \
-    --db.etcd.insecure_skip_verify
-```
-
-Sample `lnd.conf` (with other setting omitted):
-
-```text
-[db]
-db.backend=etcd
-db.etcd.host=127.0.0.1:2379
-db.etcd.cerfile=/home/user/etcd/bin/default.etcd/fixtures/client/cert.pem
-db.etcd.keyfile=/home/user/etcd/bin/default.etcd/fixtures/client/key.pem
-db.etcd.insecure_skip_verify=true
-```
-
-Optionally users can specify `db.etcd.user` and `db.etcd.pass` for db user
-authentication. If the database is shared, it is possible to separate our data
-from other users by setting `db.etcd.namespace` to an (already existing) etcd
-namespace. In order to test without TLS, users are able to set `db.etcd.disabletls`
-flag to `true`.
-
-## Migrating existing channel.db to etcd
-
-This is currently not supported.
-
-## Disclaimer
-
-As mentioned before this is an experimental feature, and with that your data
-may be lost. Use at your own risk!
diff --git a/docs/nat_traversal.md b/docs/nat_traversal.md
deleted file mode 100644
index 8493a37..0000000
--- a/docs/nat_traversal.md
+++ /dev/null
@@ -1,23 +0,0 @@
-# NAT Traversal
-
-`lnd` has support for NAT traversal using a number of different techniques. At
-the time of writing this documentation, UPnP and NAT-PMP are supported. NAT
-traversal can be enabled through `lnd`'s `--nat` flag.
-
-```shell
-$  lnd ... --nat
-```
-
-On startup, `lnd` will try the different techniques until one is found that's
-supported by your hardware. The underlying dependencies used for these
-techniques rely on using system-specific binaries in order to detect your
-gateway device's address. This is needed because we need to be able to reach the
-gateway device to determine if it supports the specific NAT traversal technique
-currently being tried. Because of this, due to uncommon setups, it is possible
-that these binaries are not found in your system. If this is case, `lnd` will
-exit stating such error.
-
-As a bonus, `lnd` spawns a background thread that automatically detects IP
-address changes and propagates the new address update to the rest of the
-network. This is especially beneficial for users who were provided dynamic IP
-addresses from their internet service provider.
diff --git a/docs/ruby-thing.rb b/docs/ruby-thing.rb
deleted file mode 100644
index 922201f..0000000
--- a/docs/ruby-thing.rb
+++ /dev/null
@@ -1,12 +0,0 @@
-#!/usr/bin/env ruby
-
-File.open("INSTALL.md", 'r') do |f|
-  f.each_line do |line|
-    forbidden_words = ['Table of contents', 'define', 'pragma']
-    next if !line.start_with?("#") || forbidden_words.any? { |w| line =~ /#{w}/ }
-     
-    title = line.gsub("#", "").strip
-    href = title.gsub(" ", "-").downcase
-    puts "  " * (line.count("#")-1) + "* [#{title}](\##{href})"
-  end
-end