Revert "epic Respiration Rework" (#6524)

Content.Server/Chemistry/ReagentEffects/ModifyLungGas.cs

@@ -1,24 +0,0 @@
-using System.Collections.Generic;
-using Content.Server.Body.Components;
-using Content.Shared.Atmos;
-using Content.Shared.Chemistry.Reagent;
-using Robust.Shared.Serialization.Manager.Attributes;
-
-namespace Content.Server.Chemistry.ReagentEffects;
-
-public class ModifyLungGas : ReagentEffect
-{
-    [DataField("ratios", required: true)]
-    private Dictionary<Gas, float> _ratios = default!;
-
-    public override void Effect(ReagentEffectArgs args)
-    {
-        if (args.EntityManager.TryGetComponent<LungComponent>(args.OrganEntity, out var lung))
-        {
-            foreach (var (gas, ratio) in _ratios)
-            {
-                lung.Air.Moles[(int) gas] += (ratio * args.Quantity.Float()) / Atmospherics.BreathMolesToReagentMultiplier;
-            }
-        }
-    }
-}