Drop no longer used python bindings

PKGBUILD

@@ -2,14 +2,13 @@
 
 pkgname=brial
 pkgver=1.2.10
-pkgrel=1
+pkgrel=2
 pkgdesc="Library for polynomials over boolean rings"
 arch=(x86_64)
 url="https://github.com/BRiAl/BRiAl"
 license=(GPL)
 depends=(m4ri)
-makedepends=(boost python)
-optdepends=('python: Python bindings')
+makedepends=(boost)
 source=("https://github.com/BRiAl/BRiAl/releases/download/$pkgver/brial-$pkgver.tar.bz2")
 sha256sums=('dd10ab9e0d74e046ec4d84eecbde9de026a2305246ee088883cbae5744b4f18d')
 
@@ -19,9 +18,6 @@ build() {
   ./configure --prefix=/usr --enable-shared
   sed -i -e 's/ -shared / -Wl,-O1,--as-needed\0/g' libtool # https://bugzilla.gnome.org/show_bug.cgi?id=655517
   make
-
-  cd sage-brial
-  python setup.py build
 }
 
 check() {
@@ -33,7 +29,4 @@ package() {
   cd $pkgname-$pkgver
 
   make DESTDIR="$pkgdir" install
-
-  cd sage-brial
-  python setup.py install --skip-build --root="$pkgdir" --optimize=1
 }