Revert "Disease stages" (#9034)

Content.Shared/Disease/DiseaseEffect.cs

@@ -1,5 +1,4 @@
 using JetBrains.Annotations;
-using Robust.Shared.Utility;
 
 namespace Content.Shared.Disease
 {
@@ -16,38 +15,6 @@ namespace Content.Shared.Disease
         /// What effect the disease will have.
         /// </summary>
         public abstract void Effect(DiseaseEffectArgs args);
-
-        /// <summary>
-        /// What is the minimal severity needed for this effect to occur?
-        /// </summary>
-        [DataField("minSeverity")]
-        public float MinSeverity
-        {
-            get => _minSeverity;
-            set
-            {
-                DebugTools.Assert(value > 1f || value < 0f ,"MinSeverity have been attempted to be set out of range");
-                _minSeverity = Math.Clamp(value, 0.0f, 1.0f);
-            }
-        }
-
-        private float _minSeverity = 0.0f;
-
-        /// <summary>
-        /// What is the maximum severity that this effect can occur?
-        /// </summary>
-        [DataField("maxSeverity")]
-        public float MaxSeverity
-        {
-            get => _maxSeverity;
-            set
-            {
-                DebugTools.Assert(value > 1f || value < 0f ,"MaxSeverity have been attempted to be set out of range");
-                _maxSeverity = Math.Clamp(value, 0.0f, 1.0f);
-            }
-        }
-
-        private float _maxSeverity = 1.0f;
     }
     /// <summary>
     /// What you have to work with in any disease effect/cure.