removed outdated pkgbuild

contrib/PKGBUILD

@@ -1,25 +0,0 @@
-# Maintainer: tuftedocelot@fastmail.fm
-_pkgname=exa
-pkgname=${_pkgname}-git
-pkgver=303
-pkgrel=1
-pkgdesc='Replacement for ls written in Rust.'
-arch=('i686' 'x86_64')
-url="https://github.com/ogham/exa"
-license='MIT'
-depends=('libssh2')
-makedepends=('cmake' 'rust-nightly-bin' 'libgit2')
-source=("git+https://github.com/ogham/exa.git")
-md5sums=('SKIP')
-
-pkgver() {
-    cd "$srcdir/$_pkgname"
-    git rev-list --count HEAD
-}
-
-package() {
-    cd "$srcdir/$_pkgname"
-    make
-    install -Dm755 "$srcdir/$_pkgname/target/release/$_pkgname" "$pkgdir/usr/bin/$_pkgname"
-    install -Dm644 "$srcdir/$_pkgname/man/$_pkgname.1" "$pkgdir/usr/share/man/man1/$_pkgname.1"
-}