diff --git a/shazam/utils.go b/shazam/utils.go
deleted file mode 100644
index e31e3f3..0000000
--- a/shazam/utils.go
+++ /dev/null
@@ -1,18 +0,0 @@
-package shazam
-
-// deduplicate returns a list of unique integers from the given array.
-// The order of the given array is not preserved in the result.
-func deduplicate(array []int) []int {
-	uniqueMap := make(map[int]struct{})
-
-	for _, num := range array {
-		uniqueMap[num] = struct{}{}
-	}
-
-	var uniqueList []int
-	for num := range uniqueMap {
-		uniqueList = append(uniqueList, num)
-	}
-
-	return uniqueList
-}