diff --git a/extra/js17/PKGBUILD b/extra/js17/PKGBUILD
deleted file mode 100644
index 7ec81f822..000000000
--- a/extra/js17/PKGBUILD
+++ /dev/null
@@ -1,52 +0,0 @@
-# $Id: PKGBUILD 183635 2013-04-25 18:13:54Z ioni $
-# Maintainer: Ionut Biru <ibiru@archlinux.org>
-
-# ALARM: Kevin Mihelich <kevin@archlinuxarm.org>
-#  - patch for AArch64
-
-pkgname=js17
-pkgver=17.0.0
-pkgrel=4
-pkgdesc="JavaScript interpreter and libraries (legacy)"
-arch=(i686 x86_64)
-url="https://developer.mozilla.org/En/SpiderMonkey/17"
-license=(MPL)
-depends=(nspr gcc-libs readline)
-makedepends=(python2 zip libffi)
-conflicts=('js<24.2.0')
-options=(!staticlibs)
-source=(http://ftp.mozilla.org/pub/mozilla.org/js/mozjs$pkgver.tar.gz
-        aarch64.patch)
-md5sums=('20b6f8f1140ef6e47daa3b16965c9202'
-         '144736bd4a4825ba5a1c87439230964d')
-
-prepare() {
-  cd mozjs$pkgver/js/src
-
-  # Fix incompatibility with Perl 5.22
-  sed -i 's/(defined\((@TEMPLATE_FILE)\))/\1/' config/milestone.pl
-
-  cd ../..
-  patch -p1 -i ../aarch64.patch
-}
-
-build() {
-  unset CPPFLAGS
-  cd mozjs$pkgver/js/src
-  ./configure --prefix=/usr --with-system-nspr --with-system-ffi \
-     --enable-readline --enable-threadsafe
-  make
-}
-
-check() {
-  cd mozjs$pkgver/js/src
-  make check
-}
-
-package() {
-  cd mozjs$pkgver/js/src
-  make DESTDIR="$pkgdir" install
-  find "$pkgdir"/usr/{lib/pkgconfig,include} -type f -exec chmod -x {} +
-}
-
-# vim:set ts=2 sw=2 et:
diff --git a/extra/js17/aarch64.patch b/extra/js17/aarch64.patch
deleted file mode 100644
index b7dec4a2d..000000000
--- a/extra/js17/aarch64.patch
+++ /dev/null
@@ -1,13 +0,0 @@
-diff -urN a/mfbt/double-conversion/utils.h b/mfbt/double-conversion/utils.h
---- a/mfbt/double-conversion/utils.h	2013-10-29 14:40:19.000000000 -0600
-+++ b/mfbt/double-conversion/utils.h	2015-07-10 22:55:40.262596161 -0600
-@@ -58,7 +58,8 @@
-     defined(__mips__) || defined(__powerpc__) || \
-     defined(__sparc__) || defined(__sparc) || defined(__s390__) || \
-     defined(__SH4__) || defined(__alpha__) || \
--    defined(_MIPS_ARCH_MIPS32R2)
-+    defined(_MIPS_ARCH_MIPS32R2) || \
-+    defined(__AARCH64EL__)
- #define DOUBLE_CONVERSION_CORRECT_DOUBLE_OPERATIONS 1
- #elif defined(_M_IX86) || defined(__i386__) || defined(__i386)
- #if defined(_WIN32)