Merge bitcoin/bitcoin#24646: doc: remove unneeded documentation on basic package management on FreeBSD

38a1b0b doc: remove unneeded documentation on basic package management on FreeBSD (jessebarton)

Pull request description:

  In reference to #24618

ACKs for top commit:
  fanquake:
    ACK 38a1b0b - Thanks. In future, please re-use existing PRs, so that discussion and changes are kept together.

Tree-SHA512: ece5b85bca7f11e11d47c0674a6b96a72c3bb65dd02ab25553db511a001a9fc682c0ff8276e39d979fdd1f57a64137f586cfa548aab5c08cd9341455217b9181

Author: MarcoFalke

doc/build-freebsd.md

@@ -7,7 +7,7 @@ This guide describes how to build bitcoind, command-line utilities, and GUI on F
 ## Preparation
 
 ### 1. Install Required Dependencies
-Install the required dependencies the usual way you [install software on FreeBSD](https://www.freebsd.org/doc/en/books/handbook/ports.html) - either with `pkg` or via the Ports collection. The example commands below use `pkg` which is usually run as `root` or via `sudo`. If you want to use `sudo`, and you haven't set it up: [use this guide](http://www.freebsdwiki.net/index.php/Sudo%2C_configuring) to setup `sudo` access on FreeBSD.
+Run the following as root to install the base dependencies for building.
 
 ```bash
 pkg install autoconf automake boost-libs git gmake libevent libtool pkgconf