Revert "common/lru: add test case for BasicLRU.Peek (ethereum#27559)"

This reverts commit 1fb3aa6.

common/lru/basiclru_test.go

@@ -170,20 +170,6 @@ func TestBasicLRUContains(t *testing.T) {
 	}
 }
 
-// Test that Peek doesn't update recent-ness
-func TestBasicLRUPeek(t *testing.T) {
-	cache := NewBasicLRU[int, int](2)
-	cache.Add(1, 1)
-	cache.Add(2, 2)
-	if v, ok := cache.Peek(1); !ok || v != 1 {
-		t.Errorf("1 should be set to 1")
-	}
-	cache.Add(3, 3)
-	if cache.Contains(1) {
-		t.Errorf("should not have updated recent-ness of 1")
-	}
-}
-
 func BenchmarkLRU(b *testing.B) {
 	var (
 		capacity = 1000