Import tests from tests/llvm repository

It's not necessary to store the tests in a separate repository, since
other packages can just reference the tests in this repo.

tests/binutils-plugin-ar/runtest.sh

@@ -0,0 +1,5 @@
+set -exo pipefail
+
+echo "void lto_function(){}" | clang -flto -O2 -c -x c -o foo.o -
+ar crs foo.a foo.o
+readelf -c foo.a | grep lto_function

tests/tests.yml

@@ -9,9 +9,6 @@
       - cargo
       - clang
       - binutils
-    repositories:
-      - repo: "https://src.fedoraproject.org/tests/llvm.git"
-        dest: "llvm"
     tests:
       - regression-tests
       - rust-sanity:
@@ -31,4 +28,4 @@
       # FIXME: This fails, because the CI system has a hard-coded timeout of 4
       # hours.
       #- build-compat
-      - llvm/binutils-plugin-ar
+      - binutils-plugin-ar