Remove dead code tracking debug components

Reviewed By: pentiumao

Differential Revision: D73112441

fbshipit-source-id: 3734066a2ad4b978b2b8b2c279a432ec4c72804a

Author: astreet

litho-core/src/main/java/com/facebook/litho/DebugComponent.kt

@@ -359,16 +359,15 @@ private constructor(
       }
       val componentKey = node.getGlobalKeyAt(componentIndex)
       return DebugComponent(
-              globalKey = generateGlobalKey(context, componentKey),
-              result = result,
-              node = result.node,
-              componentIndex = componentIndex,
-              x = x,
-              y = y,
-              xOffset = xOffset,
-              yOffset = yOffset,
-          )
-          .also { node.registerDebugComponent(it) }
+          globalKey = generateGlobalKey(context, componentKey),
+          result = result,
+          node = result.node,
+          componentIndex = componentIndex,
+          x = x,
+          y = y,
+          xOffset = xOffset,
+          yOffset = yOffset,
+      )
     }
 
     @JvmStatic

litho-core/src/main/java/com/facebook/litho/LithoNode.kt

@@ -70,7 +70,6 @@ open class LithoNode : Node<LithoLayoutContext>, Cloneable {
   // region private properties
   private var _transitionId: TransitionId? = null
   private var _attachables: MutableList<Attachable>? = null
-  private var debugComponents: MutableSet<DebugComponent>? = null
   private var _unresolvedComponents: MutableList<Component>? = null
   private var frozen: Boolean = false
   private var nodeInfoWasWritten: Boolean = false
@@ -754,13 +753,6 @@ open class LithoNode : Node<LithoLayoutContext>, Cloneable {
     this.justifyContent = justifyContent
   }
 
-  fun registerDebugComponent(debugComponent: DebugComponent) {
-    if (debugComponents == null) {
-      debugComponents = HashSet()
-    }
-    debugComponents?.add(debugComponent)
-  }
-
   fun setMeasureFunction(measureFunction: YogaMeasureFunction) {
     yogaMeasureFunction = measureFunction
   }
@@ -884,10 +876,6 @@ open class LithoNode : Node<LithoLayoutContext>, Cloneable {
     nestedTreeHolder = holder
   }
 
-  fun resetDebugInfo() {
-    debugComponents = null
-  }
-
   private fun shouldApplyTouchExpansion(): Boolean =
       touchExpansion != null && (nodeInfo?.hasTouchEventHandlers() == true)
 

litho-core/src/main/java/com/facebook/litho/Resolver.kt

@@ -576,7 +576,6 @@ object Resolver {
     // 2. Shallow copy this layout.
     val layout: LithoNode = current.clone()
     layout.children = ArrayList(current.childCount)
-    layout.resetDebugInfo()
     commitToLayoutState(resolveContext.treeState, current)
 
     // 3. Iterate over children.