Refactor: Remove type checking

Author: HossamSaberr

src/Containers-KeyedTree-Tests/CTKeyedTreeTest.class.st

@@ -226,6 +226,10 @@ CTKeyedTreeTest >> testDeepCopyStateNotShared [
 
 	clone := original copy.
 
+	"Verify they have equal values but are different objects in memory before mutation"
+	self assert: original equals: clone.
+	self deny: original == clone.
+	
 	(clone at: #config) at: #color put: 'blue'.
 
 	self assert: (original atPath: #(config color)) equals: 'red'.

src/Containers-KeyedTree/CTKeyedTree.class.st

@@ -484,8 +484,7 @@ CTKeyedTree >> postCopy [
 
 	super postCopy.
 	self keysAndValuesDo: [ :key :value |
-		(value isKindOf: self class)
-			ifTrue: [ self at: key put: value copy ] ]
+		self at: key put: value copy ]
 ]
 
 { #category : 'printing' }