CI: enable crossdirect again

All bugs should be ironed out now. Let's get some more testing by
enabling crossdirect in CI again. The crossdirect feature is still only
in pmbootstrap master, not in the latest pmbootstrap release. But if it
works without problems for some time, we're ready to make a release.

This reverts commit 6e3252e401.

.gitlab-ci/build_changed_aports.py

@@ -117,8 +117,8 @@ def get_changed_packages():
 def check_build(packages):
     # Initialize build environment with less logging
     run_pmbootstrap(["build_init"])
-    run_pmbootstrap(["--details-to-stdout", "--no-crossdirect", "build",
-                     "--strict", "--force"] + list(packages))
+    run_pmbootstrap(["--details-to-stdout", "build", "--strict", "--force"] +
+                    list(packages))
 
 
 if __name__ == "__main__":