doc: Remove mention of natpmp build options

Author: laanwj

doc/build-freebsd.md

@@ -42,7 +42,7 @@ from ports. However, you can build DB 4.8 yourself [using depends](/depends).
 
 ```bash
 pkg install gmake
-gmake -C depends NO_BOOST=1 NO_LIBEVENT=1 NO_QT=1 NO_SQLITE=1 NO_NATPMP=1 NO_UPNP=1 NO_ZMQ=1 NO_USDT=1
+gmake -C depends NO_BOOST=1 NO_LIBEVENT=1 NO_QT=1 NO_SQLITE=1 NO_UPNP=1 NO_ZMQ=1 NO_USDT=1
 ```
 
 When the build is complete, the Berkeley DB installation location will be displayed:

doc/build-openbsd.md

@@ -44,7 +44,7 @@ from ports. However you can build it yourself, [using depends](/depends).
 Refer to [depends/README.md](/depends/README.md) for detailed instructions.
 
 ```bash
-gmake -C depends NO_BOOST=1 NO_LIBEVENT=1 NO_QT=1 NO_SQLITE=1 NO_NATPMP=1 NO_UPNP=1 NO_ZMQ=1 NO_USDT=1
+gmake -C depends NO_BOOST=1 NO_LIBEVENT=1 NO_QT=1 NO_SQLITE=1 NO_UPNP=1 NO_ZMQ=1 NO_USDT=1
 ...
 to: /path/to/bitcoin/depends/*-unknown-openbsd*
 ```

doc/build-osx.md

@@ -135,17 +135,6 @@ Skip if you do not need this functionality.
 brew install miniupnpc
 ```
 
-###### libnatpmp
-
-libnatpmp may be used for NAT-PMP port mapping.
-Skip if you do not need this functionality.
-
-``` bash
-brew install libnatpmp
-```
-
-Check out the [further configuration](#further-configuration) section for more information.
-
 ---
 
 #### ZMQ Dependencies

doc/build-unix.md

@@ -60,9 +60,9 @@ executables, which are based on BerkeleyDB 4.8. Otherwise, you can build Berkele
 
 To build Bitcoin Core without wallet, see [*Disable-wallet mode*](#disable-wallet-mode)
 
-Optional port mapping libraries (see: `-DWITH_MINIUPNPC=ON` and `-DWITH_NATPMP=ON`):
+Optional port mapping library (see: `-DWITH_MINIUPNPC=ON`):
 
-    sudo apt install libminiupnpc-dev libnatpmp-dev
+    sudo apt install libminiupnpc-dev
 
 ZMQ dependencies (provides ZMQ API):
 
@@ -112,9 +112,9 @@ are based on Berkeley DB 4.8. Otherwise, you can build Berkeley DB [yourself](#b
 
 To build Bitcoin Core without wallet, see [*Disable-wallet mode*](#disable-wallet-mode)
 
-Optional port mapping libraries (see: `-DWITH_MINIUPNPC=ON` and `-DWITH_NATPMP=ON`):
+Optional port mapping library (see: `-DWITH_MINIUPNPC=ON`):
 
-    sudo dnf install miniupnpc-devel libnatpmp-devel
+    sudo dnf install miniupnpc-devel
 
 ZMQ dependencies (provides ZMQ API):
 
@@ -153,7 +153,7 @@ The legacy wallet uses Berkeley DB. To ensure backwards compatibility it is
 recommended to use Berkeley DB 4.8. If you have to build it yourself, and don't
 want to use any other libraries built in depends, you can do:
 ```bash
-make -C depends NO_BOOST=1 NO_LIBEVENT=1 NO_QT=1 NO_SQLITE=1 NO_NATPMP=1 NO_UPNP=1 NO_ZMQ=1 NO_USDT=1
+make -C depends NO_BOOST=1 NO_LIBEVENT=1 NO_QT=1 NO_SQLITE=1 NO_UPNP=1 NO_ZMQ=1 NO_USDT=1
 ...
 to: /path/to/bitcoin/depends/x86_64-pc-linux-gnu
 ```

doc/dependencies.md

@@ -34,7 +34,6 @@ You can find installation instructions in the `build-*.md` file for your platfor
 ### Networking
 | Dependency | Releases | Version used | Minimum required | Runtime |
 | --- | --- | --- | --- | --- |
-| [libnatpmp](../depends/packages/libnatpmp.mk) | [link](https://github.com/miniupnp/libnatpmp/) | commit [f2433be...](https://github.com/bitcoin/bitcoin/pull/29708) | | No |
 | [MiniUPnPc](../depends/packages/miniupnpc.mk) | [link](https://miniupnp.tuxfamily.org/) | [2.2.7](https://github.com/bitcoin/bitcoin/pull/29707) | 2.1 | No |
 
 ### Notifications