Remove docs/README.build. Superseded by README.rst

docs/README.build

-INDEX
------
-
-* Build requirements
-* Building the most basic Arch Linux live media. (configs/baseline)
-* Building official Arch Linux live media. (configs/releng)
-
-
-
-*** Build requirements
-
-** For mkarchiso script needs these packages (build host):
- + arch-install-scripts    for pacstrap/arch-chroot
- + edk2-shell              for UEFI shell
- + squashfs-tools          for mksquashfs
- + libisoburn              for xorriso
- + btrfs-progs             for mkfs.btrfs (optional)
-
-** For configs/releng build.sh needs theses packages (build host):
- + dosfstools              for mkfs.fat
- + lynx                    for fetching the latest installation guide
-
-** For these hooks needs these packages (on target airootfs)
-* archiso
- + (none)
-* archiso_loop_mnt
- + (none)
-* archiso_pxe_common
- + mkinitcpio-nfs-utils    for ipconfig
-* archiso_pxe_nbd
- + nbd                     for nbd-client
-* archiso_pxe_http
- + curl                    for curl
-* archiso_pxe_nfs
- + mkinitcpio-nfs-utils    for nfsmount
-* archiso_shutdown
- + (none)
-
-
-*** Building the most basic Arch Linux live media. (configs/baseline)
-
-* Install needed packages.
-  # pacman -S git make arch-install-scripts squashfs-tools libisoburn --needed
-
-* Install archiso.
-  # git clone git://projects.archlinux.org/archiso.git
-  # make -C archiso install
-
-* Build a basic iso.
-  # /usr/share/archiso/configs/baseline/build.sh
-
-Note: If you want to customize, just see the configs/releng directory which is
-used to build official images with much more things.
-
-
-*** Building official Arch Linux live media. (configs/releng)
-
-* Install needed packages.
-  # pacman -S git make arch-install-scripts squashfs-tools libisoburn dosfstools lynx --needed
-
-* Install archiso.
-  # git clone git://projects.archlinux.org/archiso.git
-  # make -C archiso install
-
-* Build them!
-  # /usr/share/archiso/configs/releng/build.sh
-
-Note: See build.sh -h for more options. This only runs on x86_64.