diff --git a/.gitmodules b/.gitmodules
index 4e5c50f..021a0e3 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -790,9 +790,6 @@
 [submodule "zsh-prompt-ys"]
 	path = zsh-prompt-ys
 	url = ssh://aur@aur.archlinux.org/zsh-prompt-ys.git
-[submodule "zycore-c"]
-	path = zycore-c
-	url = ssh://aur@aur.archlinux.org/zycore-c.git
 [submodule "aurutils"]
 	path = aurutils
 	url = https://aur.archlinux.org/aurutils.git
diff --git a/zycore-c b/zycore-c
deleted file mode 160000
index fa909c6..0000000
--- a/zycore-c
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit fa909c6e6a09a884657f4df78baaaf49f2726eaf
diff --git a/zydis/PKGBUILD b/zydis/PKGBUILD
deleted file mode 100644
index 1f3ff09..0000000
--- a/zydis/PKGBUILD
+++ /dev/null
@@ -1,72 +0,0 @@
-# Maintainer: George Rawlinson <grawlinson@archlinux.org>
-# Contributor: Thibaut Pérami <thibaut.perami@cl.cam.ac.uk>
-
-pkgname=zydis
-pkgver=4.0.0
-pkgrel=1
-pkgdesc='Fast and lightweight x86/x86-64 disassembler and code generation library'
-arch=('x86_64')
-url='https://zydis.re'
-license=('MIT')
-depends=('gcc-libs' 'zycore-c')
-makedepends=('git' 'cmake' 'ruby-ronn-ng' 'doxygen')
-checkdepends=('python')
-_commit='1ba75aeefae37094c7be8eba07ff81d4fe0f1f20'
-source=("git+https://github.com/zyantific/zydis.git#commit=$_commit")
-b2sums=('SKIP')
-
-pkgver() {
-  cd "$pkgname"
-
-  git describe --tags | sed -e 's/^v//' -e 's/-/./g'
-}
-
-build() {
-  # https://archlinux.org/todo/lto-fat-objects/
-  export CFLAGS+=" -ffat-lto-objects"
-
-  # https://github.com/zyantific/zydis#-fpic-for-shared-library-builds
-  cmake \
-    -S "$pkgname" \
-    -B build \
-    -W no-dev \
-    -D CMAKE_BUILD_TYPE='None' \
-    -D CMAKE_INSTALL_PREFIX=/usr \
-    -D CMAKE_POSITION_INDEPENDENT_CODE=ON \
-    -D ZYDIS_BUILD_SHARED_LIB=ON \
-    -D ZYAN_SYSTEM_ZYCORE=ON \
-    -D ZYDIS_BUILD_MAN=ON
-
-  cmake --build build
-}
-
-check() {
-  # test suite extracted from .github/workflows/main.yml
-  cd "$pkgname/tests"
-
-  # regression tests (decoder)
-  python regression.py test "$srcdir/build/ZydisInfo"
-
-  # regression tests (encoder)
-  python regression_encoder.py \
-    "$srcdir/build/ZydisFuzzReEncoding" \
-    "$srcdir/build/ZydisFuzzEncoder" \
-    "$srcdir/build/ZydisTestEncoderAbsolute"
-}
-
-package() {
-  DESTDIR="$pkgdir" cmake --install build
-
-  cd "$pkgname"
-
-  # documentation
-  install -vDm644 -t "$pkgdir/usr/share/doc/Zydis" README.md
-  cp -vr examples "$pkgdir/usr/share/doc/Zydis"
-
-  # move man pages to correct directory
-  install -vd "$pkgdir/usr/share/man/man1"
-  mv "$pkgdir/usr/share/man/"*.1 "$pkgdir/usr/share/man/man1"
-
-  # license
-  install -vDm644 -t "$pkgdir/usr/share/licenses/$pkgname" LICENSE
-}