build: enable goimports and varcheck linters (#16446)

swarm/fuse/fuse_dir.go

@@ -19,12 +19,13 @@
 package fuse
 
 import (
-	"bazil.org/fuse"
-	"bazil.org/fuse/fs"
-	"golang.org/x/net/context"
 	"os"
 	"path/filepath"
 	"sync"
+
+	"bazil.org/fuse"
+	"bazil.org/fuse/fs"
+	"golang.org/x/net/context"
 )
 
 var (

swarm/fuse/swarmfs.go

@@ -17,9 +17,10 @@
 package fuse
 
 import (
-	"github.com/ethereum/go-ethereum/swarm/api"
 	"sync"
 	"time"
+
+	"github.com/ethereum/go-ethereum/swarm/api"
 )
 
 const (

swarm/storage/dbstore.go

@@ -54,7 +54,6 @@ const (
 
 	// key prefixes for leveldb storage
 	kpIndex = 0
-	kpData  = 1
 )
 
 var (

swarm/storage/netstore.go

@@ -83,11 +83,6 @@ func NewNetStore(hash SwarmHasher, lstore *LocalStore, cloud CloudStore, params
 	}
 }
 
-const (
-	// maximum number of peers that a retrieved message is delivered to
-	requesterCount = 3
-)
-
 var (
 	// timeout interval before retrieval is timed out
 	searchTimeout = 3 * time.Second