[#2] Update lint config, fix lint errors

Signed-off-by: Anton Nikiforov <an.nikiforov@yadro.com>

.golangci.yml

@@ -32,15 +32,12 @@ linters:
     - revive
 
     # some default golangci-lint linters
-    - deadcode
     - errcheck
     - gosimple
     - ineffassign
     - staticcheck
-    - structcheck
     - typecheck
     - unused
-    - varcheck
 
     # extra linters
     - exhaustive

netmap/policy_test.go

@@ -28,7 +28,6 @@ FILTER City EQ SPB AND SSD EQ true OR City EQ SPB AND Rating GE 5 AS SPBSSD`,
 	var p PlacementPolicy
 
 	for _, testCase := range testCases {
-
 		require.NoError(t, p.DecodeString(testCase))
 
 		var b strings.Builder

pool/mock_test.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"crypto/ecdsa"
 	"errors"
+
 	"go.uber.org/zap"
 
 	sessionv2 "github.com/TrueCloudLab/frostfs-api-go/v2/session"

pool/pool.go

@@ -1664,14 +1664,7 @@ func (p *Pool) log(level zapcore.Level, msg string, fields ...zap.Field) {
 		return
 	}
 
-	switch level {
+	p.logger.Log(level, msg, fields...)
-	case zap.DebugLevel:
-		p.logger.Debug(msg, fields...)
-	case zap.WarnLevel:
-		p.logger.Warn(msg, fields...)
-	case zap.ErrorLevel:
-		p.logger.Error(msg, fields...)
-	}
 }
 
 func fillDefaultInitParams(params *InitParameters, cache *sessionCache) {