Revert "Solution Entities" (#23160)

Revert "Solution Entities (#21916)"

This reverts commit d75e743dd7.

Content.Server/Atmos/Piping/Unary/Components/GasCondenserComponent.cs

@@ -1,5 +1,4 @@
 using Content.Server.Atmos.Piping.Unary.EntitySystems;
-using Content.Shared.Chemistry.Components;
 
 namespace Content.Server.Atmos.Piping.Unary.Components;
 
@@ -22,12 +21,6 @@ public sealed partial class GasCondenserComponent : Component
     [DataField]
     public string SolutionId = "tank";
 
-    /// <summary>
-    /// The solution that gases are condensed into.
-    /// </summary>
-    [DataField]
-    public Entity<SolutionComponent>? Solution = null;
-
     /// <summary>
     /// For a condenser, how many U of reagents are given per each mole of gas.
     /// </summary>