all: remove redundant conversions and import names (#21903)

internal/debug/flags.go

@@ -28,7 +28,7 @@ import (
 	"github.com/ethereum/go-ethereum/metrics"
 	"github.com/ethereum/go-ethereum/metrics/exp"
 	"github.com/fjl/memsize/memsizeui"
-	colorable "github.com/mattn/go-colorable"
+	"github.com/mattn/go-colorable"
 	"github.com/mattn/go-isatty"
 	"gopkg.in/urfave/cli.v1"
 )

internal/ethapi/api.go

@@ -793,7 +793,7 @@ func (args *CallArgs) ToMessage(globalGasCap uint64) types.Message {
 
 	var data []byte
 	if args.Data != nil {
-		data = []byte(*args.Data)
+		data = *args.Data
 	}
 
 	msg := types.NewMessage(addr, args.To, 0, value, gas, gasPrice, data, false)

internal/flags/helpers.go

@@ -21,7 +21,7 @@ import (
 	"path/filepath"
 
 	"github.com/ethereum/go-ethereum/params"
-	cli "gopkg.in/urfave/cli.v1"
+	"gopkg.in/urfave/cli.v1"
 )
 
 var (