chore(lint): remove some linters

- remove duplicate `predeclared`
- remove commented `varnamelen` and `wrapcheck`

.golangci.yml

@@ -35,8 +35,6 @@ linters:
   enable:
     # - cyclop
     # - errorlint
-    # - varnamelen
-    # - wrapcheck
     - asciicheck
     - bidichk
     - bodyclose
@@ -83,7 +81,6 @@ linters:
     - nosprintfhostport
     - prealloc
     - predeclared
-    - predeclared
     - promlinter
     - revive
     - rowserrcheck