Update jquery.combobox.js
Update jquery.combobox.js

- is not translated
- is intuitive and therefore unnecessary
- the combox of the other tools (selection, tooltip) do not have label
laurentj/lizmap-web-client,3liz/lizmap-web-client,laurentj/lizmap-web-client,3liz/lizmap-web-client,laurentj/lizmap-web-client,jancelin/lizmap-web-client,makinacorpus/lizmap-web-client,rldhont/lizmap-web-client,3liz/lizmap-web-client,rldhont/lizmap-web-client,nboisteault/lizmap-web-client,laurentj/lizmap-web-client,rldhont/lizmap-web-client,makinacorpus/lizmap-web-client,jancelin/lizmap-web-client,nboisteault/lizmap-web-client,nboisteault/lizmap-web-client,jancelin/lizmap-web-client,jancelin/lizmap-web-client,makinacorpus/lizmap-web-client,3liz/lizmap-web-client,rldhont/lizmap-web-client,makinacorpus/lizmap-web-client,nboisteault/lizmap-web-client,makinacorpus/lizmap-web-client,jancelin/lizmap-web-client,jancelin/lizmap-web-client