main/nsd: Linting

Remove builddir and depends as they were just being set to default
values.

main/nsd/APKBUILD

@@ -9,7 +9,6 @@ pkgdesc="Authoritative only, high performance and simple DNS server"
 url="https://www.nlnetlabs.nl/projects/nsd"
 arch="all"
 license="BSD-3-Clause"
-depends=""
 makedepends="openssl-dev libevent-dev"
 install="$pkgname.pre-install $pkgname.pre-upgrade"
 subpackages="$pkgname-doc $pkgname-dbg"
@@ -18,7 +17,6 @@ pkggroups="nsd"
 source="https://www.nlnetlabs.nl/downloads/nsd/$pkgname-$pkgver.tar.gz
 	nsd.initd
 	"
-builddir="$srcdir/$pkgname-$pkgver"
 
 build() {
 	cd "$builddir"