Remove old version of UpdateCachedData

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Decal/DecalProjectorComponent.cs

         {
             DrawGizmo(true);
             // if this object is selected there is a chance the transform was changed so update culling info
-            DecalSystem.instance.UpdateCachedData(this);
+            DecalSystem.instance.UpdateCachedData(transform, m_DrawDistance, m_FadeScale, m_Handle);
         }
 
         public void OnDrawGizmos()

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Decal/DecalSystem.cs

             }
         }
 
-        // for compatibility with old code
-        public void UpdateCachedData(DecalProjectorComponent decal)
-        {
-            UpdateCachedData(decal.transform, decal.m_DrawDistance, decal.m_FadeScale, decal.Handle);
-        }
-
         public void BeginCull()
         {
             foreach (var pair in m_DecalSets)