Revert "Solution Entities" (#23160)

Revert "Solution Entities (#21916)"

This reverts commit d75e743dd7.

Content.Server/Chemistry/ReactionEffects/SolutionTemperatureEffects.cs

@@ -1,5 +1,7 @@
+using Content.Shared.Chemistry.Components;
 using Content.Shared.Chemistry.Reagent;
 using Robust.Shared.Prototypes;
+using static Robust.Shared.Physics.DynamicTree;
 
 namespace Content.Server.Chemistry.ReactionEffects
 {
@@ -119,3 +121,5 @@ namespace Content.Server.Chemistry.ReactionEffects
     }
 
 }
+
+