disable test due to problem with celldesigner

.gitlab-ci.yml

@@ -173,9 +173,10 @@ test:backend:CellDesigner_plugin:jdk-8:
   <<: *jdk_8_definition
   script: *test_backend_CellDesigner_plugin_definition
 
-test:backend:CellDesigner_plugin:jdk-11:
-  <<: *jdk_11_definition
-  script: *test_backend_CellDesigner_plugin_definition
+#CellDesigner is working on java 8 and is incompatible with java 11
+#test:backend:CellDesigner_plugin:jdk-11:
+#  <<: *jdk_11_definition
+#  script: *test_backend_CellDesigner_plugin_definition
 
 test:backend:converter:jdk-8:
   <<: *jdk_8_definition