testing/singular: use default_dev

Simplifies packaging

testing/singular/APKBUILD

@@ -3,7 +3,7 @@
 maintainer="Celeste <cielesti@protonmail.com>"
 pkgname=singular
 pkgver=4.4.1
-pkgrel=0
+pkgrel=1
 _pkgbase="${pkgver%%_p*}"
 pkgdesc="Computer algebra system for polynomial computations"
 url="https://www.singular.uni-kl.de/"
@@ -55,21 +55,6 @@ package() {
 	rm -rf "$pkgdir"/usr/share/doc
 }
 
-dev() {
-	pkgdesc="$pkgdesc (development files)"
-
-	amove \
-		usr/bin/libpolys-config \
-		usr/bin/libsingular-config \
-		usr/include \
-		usr/lib/pkgconfig \
-		usr/lib/libSingular.so \
-		usr/lib/libfactory.so \
-		usr/lib/libomalloc.so \
-		usr/lib/libpolys.so \
-		usr/lib/libsingular_resources.so
-}
-
 emacs() {
 	pkgdesc="Emacs plugins for $pkgname"