[skip ci]Improve import statements (#11633)

Signed-off-by: Xiangyu Wang <xiangyu.wang@zilliz.com>

internal/util/flowgraph/flow_graph.go

@@ -13,9 +13,8 @@ package flowgraph
 
 import (
 	"context"
-	"sync"
-
 	"errors"
+	"sync"
 )
 
 // TimeTickedFlowGraph flowgraph with input from tt msg stream

internal/util/flowgraph/input_node.go

@@ -15,6 +15,7 @@ import (
 	"github.com/milvus-io/milvus/internal/log"
 	"github.com/milvus-io/milvus/internal/msgstream"
 	"github.com/milvus-io/milvus/internal/util/trace"
+
 	"github.com/opentracing/opentracing-go"
 	oplog "github.com/opentracing/opentracing-go/log"
 	"go.uber.org/zap"

internal/util/flowgraph/input_node_test.go

@@ -17,6 +17,7 @@ import (
 	"testing"
 
 	"github.com/milvus-io/milvus/internal/msgstream"
+
 	"github.com/stretchr/testify/assert"
 )
 

internal/util/flowgraph/message_test.go

@@ -16,6 +16,7 @@ import (
 	"testing"
 
 	"github.com/milvus-io/milvus/internal/msgstream"
+
 	"github.com/stretchr/testify/assert"
 )
 

internal/util/flowgraph/node.go

@@ -16,9 +16,9 @@ import (
 	"sync"
 	"time"
 
-	"go.uber.org/zap"
-
 	"github.com/milvus-io/milvus/internal/log"
+
+	"go.uber.org/zap"
 )
 
 // Node is the interface defines the behavior of flowgraph

internal/util/flowgraph/node_test.go

@@ -22,6 +22,7 @@ import (
 	"github.com/milvus-io/milvus/internal/msgstream"
 	"github.com/milvus-io/milvus/internal/proto/commonpb"
 	"github.com/milvus-io/milvus/internal/proto/internalpb"
+
 	"github.com/stretchr/testify/assert"
 )