gengrid: avoid call select callback twice in mode ELM_OBJECT_MULTI_SELECT_MODE_WITH_CONTROL

If multi select mode is ELM_OBJECT_MULTI_SELECT_MODE_WITH_CONTROL and
user code try unselect a item and select another part which not
realized select callback calls twice in this case. For avoid this no
needs focus newly selected item.

@fix

src/lib/elementary/elm_gengrid.c

@@ -4405,7 +4405,6 @@ _item_select(Elm_Gen_Item *it)
    it->walking++;
    sd->walking++;
 
-   elm_object_item_focus_set(eo_it, EINA_TRUE);
    sd->last_selected_item = eo_it;
 
    if (it->func.func) it->func.func((void *)it->func.data, WIDGET(it), eo_it);