tests: drop lit-tests

lit tests are run in build time, in the %check stage of rpmbuild.
Hence it's not needed to run them in gating.

tests/lit-tests/main.fmf

@@ -1,20 +0,0 @@
-summary: Run lld testsuite
-test: "$WITH_SCL ./test.sh"
-duration: 30m
-require: []
-adjust:
-  - because: lld is not shipped for s390x
-    enabled: false
-    when: arch == s390x
-
-  # Common requirements when LLVM is not SCL-ized
-  - require+:
-      - lld
-      - lld-test
-    when: "collection is not defined"
-
-  # Requirements for SCL-ized LLVM
-  - require+:
-      - llvm-toolset-13.0-lld
-      - llvm-toolset-13.0-lld-test
-    when: "collection == llvm-toolset-13.0"

tests/lit-tests/test.sh

@@ -1,7 +0,0 @@
-set -eux
-
-if ! id -u lld; then
-	useradd lld
-fi
-
-su lld -c 'bash /usr/libexec/tests/lld/run-lit-tests --threads 1'