diff --git a/sdks/go/pkg/beam/runners/prism/internal/stage.go b/sdks/go/pkg/beam/runners/prism/internal/stage.go
index d045ced58f2d..e6fe28714b7f 100644
--- a/sdks/go/pkg/beam/runners/prism/internal/stage.go
+++ b/sdks/go/pkg/beam/runners/prism/internal/stage.go
@@ -374,36 +374,6 @@ func buildDescriptor(stg *stage, comps *pipepb.Components, wk *worker.W) error {
 	return nil
 }
 
-// handleSideInputs ensures appropriate coders are available to the bundle, and prepares a function to stage the data.
-func handleSideInputs(tid string, t *pipepb.PTransform, comps *pipepb.Components, coders map[string]*pipepb.Coder, wk *worker.W, replacements map[string]string) (func(b *worker.B, tid string, watermark mtime.Time), error) {
-	sis, err := getSideInputs(t)
-	if err != nil {
-		return nil, err
-	}
-	var prepSides []func(b *worker.B, watermark mtime.Time)
-
-	// Get WindowedValue Coders for the transform's input and output PCollections.
-	for local, global := range t.GetInputs() {
-		_, ok := sis[local]
-		if !ok {
-			continue // This is the main input.
-		}
-		if oldGlobal, ok := replacements[global]; ok {
-			global = oldGlobal
-		}
-		prepSide, err := handleSideInput(tid, local, global, comps, coders, wk)
-		if err != nil {
-			return nil, err
-		}
-		prepSides = append(prepSides, prepSide)
-	}
-	return func(b *worker.B, tid string, watermark mtime.Time) {
-		for _, prep := range prepSides {
-			prep(b, watermark)
-		}
-	}, nil
-}
-
 // handleSideInput returns a closure that will look up the data for a side input appropriate for the given watermark.
 func handleSideInput(tid, local, global string, comps *pipepb.Components, coders map[string]*pipepb.Coder, wk *worker.W) (func(b *worker.B, watermark mtime.Time), error) {
 	t := comps.GetTransforms()[tid]