meta: Remove tari-util

I initially created tari-util as a package to be pre-built and installed
in the installation media. This was a while ago, and now that I know
exactly how the installation process and PKGBUILDs work, all the
previous issues I had with makepkg turned out to not be issues at all.

.archlinux/PKGBUILDs/tari-util/PKGBUILD

@@ -1,22 +0,0 @@
-_yayver='8.1173.0'
-_yay="yay_${_yayver}_x86_64"
-
-pkgname=tari-util
-pkgver=0.3.0
-pkgrel=1
-pkgdesc="Misc utility packages."
-arch=('any')
-provides=('yay')
-conflicts=('yay')
-source=("https://github.com/Jguer/yay/releases/download/v${_yayver}/${_yay}.tar.gz")
-sha256sums=('e0f28c6be3c4322901438f324aed1f49ab593a8d4ed92279b1dda51381c51d6b')
-
-package() {
-  _yayout="${srcdir}/${_yay}"
-
-  install -Dm 755 "$_yayout"/yay        "$pkgdir"/usr/bin/yay
-  install -Dm 644 "$_yayout"/yay.8      "$pkgdir"/usr/share/man/man8/yay.8
-  install -Dm 644 "$_yayout"/bash       "$pkgdir"/usr/share/bash-completion/completions/yay
-  install -Dm 644 "$_yayout"/zsh        "$pkgdir"/usr/share/zsh/site-functions/_yay
-  install -Dm 644 "$_yayout"/fish       "$pkgdir"/usr/share/fish/vendor_completions.d/yay.fish
-}