Unrevert audio (#21330)

Co-authored-by: Pieter-Jan Briers <pieterjan.briers@gmail.com>

Content.Server/Fluids/EntitySystems/AbsorbentSystem.cs

@@ -7,6 +7,7 @@ using Content.Shared.Fluids.Components;
 using Content.Shared.Interaction;
 using Content.Shared.Timing;
 using Content.Shared.Weapons.Melee;
+using Robust.Server.Audio;
 using Robust.Server.GameObjects;
 using Robust.Shared.Map;
 using Robust.Shared.Prototypes;