Revert "Add standard deviation in utils"

This reverts commit 18d3075.

Signed-off-by: Qifan Deng <[email protected]>

Author: pancak3

pkg/common/utils.go

@@ -328,22 +328,3 @@ func init() {
 func Tokenize(text string) []string {
 	return re.FindAllString(text, -1)
 }
-
-// Calculate standard deviation of an int array
-func StdDevInt(data []int) float64 {
-	var sum int
-	for _, value := range data {
-		sum += value
-	}
-	mean := sum / len(data)
-
-	var sumSquares int
-	for _, value := range data {
-		diff := value - mean
-		sumSquares += diff * diff
-	}
-
-	variance := sumSquares / len(data)
-
-	return math.Sqrt(float64(variance))
-}

pkg/common/utils_test.go

@@ -168,16 +168,4 @@ var _ = Describe("Utils", Ordered, func() {
 		}
 	})
 
-	Context("Standard Deviation", func() {
-		It("should return 0 for a single element", func() {
-			data := []int{42}
-			Expect(StdDevInt(data)).To(Equal(0.0))
-		})
-
-		It("should return the correct standard deviation for multiple elements", func() {
-			data := []int{1, 2, 3, 4, 5}
-			Expect(StdDevInt(data)).To(Equal(1.4142135623730951))
-		})
-	})
-
 })