Migrate to the shared REUSE CI check

.gitlab-ci.yml

@@ -5,6 +5,7 @@
 include:
   - https://invent.kde.org/sysadmin/ci-tooling/raw/master/invent/ci-before.yml
   - https://invent.kde.org/sysadmin/ci-tooling/raw/master/invent/ci-applications-linux.yml
+  - https://invent.kde.org/sysadmin/ci-tooling/raw/master/invent/ci-reuse.yml
 
 build_clazy_clang_tidy:
   stage: build
@@ -32,10 +33,3 @@ build_clazy_clang_tidy:
   variables:
     PLATFORM: SUSEQt5.15
     BRANCH_GROUP: kf5-qt5
-
-reuse:
-  image:
-    name: fsfe/reuse:latest
-    entrypoint: [""]
-  script:
-    - reuse lint