As of the newest OSMC release these should be hidden automatically as we have placed the following in a system level advancedsettings.xml file to effect this change…
<video>
<excludefromscan action="append">
<regexp>(?i)(@eadir|system.volume.information|\$recycle)</regexp>
</excludefromscan>
<excludetvshowsfromscan action="append">
<regexp>(?i)(@eadir|system.volume.information|\$recycle)</regexp>
</excludetvshowsfromscan>
<excludefromlisting action="append">
<regexp>(?i)(@eadir|system.volume.information|\$recycle)</regexp>
</excludefromlisting>
</video>
<audio>
<excludefromscan action="append">
<regexp>(?i)(@eadir|system.volume.information|\$recycle)</regexp>
</excludefromscan>
<excludefromlisting action="append">
<regexp>(?i)(@eadir|system.volume.information|\$recycle)</regexp>
</excludefromlisting>
</audio>