reorg imports, format code (#1000)

.codecov.yml

@@ -1,5 +1,4 @@
 comment: false
-github_checks: false
 ignore:
   - "doc"
   - "example"

.github/workflows/go.yml

@@ -29,4 +29,4 @@ jobs:
       run: go test -race -coverprofile=coverage.txt -covermode=atomic ./...
 
     - name: Codecov
-      uses: codecov/codecov-action@v1
+      uses: codecov/codecov-action@v2

core/logx/tracelogger.go

@@ -6,10 +6,9 @@ import (
 	"io"
 	"time"
 
-	"go.opentelemetry.io/otel/trace"
-
 	"github.com/tal-tech/go-zero/core/timex"
 	"github.com/tal-tech/go-zero/core/trace/tracespec"
+	"go.opentelemetry.io/otel/trace"
 )
 
 type traceLogger struct {

tools/goctl/goctl.go

@@ -34,8 +34,7 @@ import (
 	"github.com/tal-tech/go-zero/tools/goctl/upgrade"
 )
 
-var (
+var commands = []cli.Command{
-	commands = []cli.Command{
 	{
 		Name:   "upgrade",
 		Usage:  "upgrade goctl to latest version",
@@ -641,7 +640,6 @@ var (
 		},
 	},
 }
-)
 
 func main() {
 	logx.Disable()