Skip tests on s390x - timeouts take too long

vtk.spec

@@ -828,6 +828,8 @@ rm -v %{buildroot}/%{_libdir}/openmpi/lib/cmake/%{name}/patches/99/FindHDF5.cmak
 export QA_RPATHS=18
 
 
+# Test take a very long time on s390x because many tests hit the default 25 minute timeout
+%ifnarch s390x
 %check
 cp %SOURCE2 .
 %if %{with xdummy}
@@ -845,6 +847,7 @@ export FLEXIBLAS=netlib
 kill %1 || :
 cat xorg.log
 %endif
+%endif
 
 
 %files -f %{_vendor}-%{_target_os}-build-serial/libs.list