Merge pull request #671 from Iceber/remove_golangci_deprecated_linter

golangci-lint: remove deprecated linters

Author: Iceber

.golangci.yml

@@ -5,7 +5,6 @@ linters:
   disable-all: true
   enable:
     - bodyclose
-    - deadcode
     - dupl
     - errcheck
     - gci
@@ -16,10 +15,8 @@ linters:
     - ineffassign
     - misspell
     - staticcheck
-    - structcheck
     - typecheck
     - unused
-    - varcheck
     - whitespace
 linters-settings:
   goimports: