diff --git a/vm/trace.go b/vm/trace.go
index f18fc39f93..2455871c95 100644
--- a/vm/trace.go
+++ b/vm/trace.go
@@ -246,14 +246,3 @@ func NewDataAvailability(gasConsumed, dataGasConsumed *felt.Felt, mode core.L1DA
 
 	return da
 }
-
-// TODO: add RPC 0.6, 0.7 and 0.8 support
-func (r *ExecutionResources) MarshalJSON() ([]byte, error) {
-	return json.Marshal(struct {
-		ComputationResources
-		DataAvailability *DataAvailability `json:"data_availability,omitempty"`
-	}{
-		ComputationResources: r.ComputationResources,
-		DataAvailability:     r.DataAvailability,
-	})
-}