Fix linter (#943)

* fix lint

* remove linters

.golangci.yml

@@ -139,11 +139,6 @@ linters-settings:
     # Default: false
     all: true
 
-  varcheck:
-    # Check usage of exported fields and variables.
-    # Default: false
-    exported-fields: false # default false # TODO: enable after fixing false positives
-
 
 linters:
   disable-all: true
@@ -167,9 +162,7 @@ linters:
     - durationcheck # check for two durations multiplied together
     - errname # Checks that sentinel errors are prefixed with the Err and error types are suffixed with the Error.
     - errorlint # errorlint is a linter for that can be used to find code that will cause problems with the error wrapping scheme introduced in Go 1.13.
-    # Removed execinquery (deprecated). execinquery is a linter about query string checker in Query function which reads your Go src files and warning it finds
     - exhaustive # check exhaustiveness of enum switch statements
-    - exportloopref # checks for pointers to enclosing loop variables
     - forbidigo # Forbids identifiers
     - funlen # Tool for detection of long functions
     # - gochecknoglobals # check that no global variables exist
@@ -201,7 +194,6 @@ linters:
     - rowserrcheck # checks whether Err of rows is checked successfully
     - sqlclosecheck # Checks that sql.Rows and sql.Stmt are closed.
     - stylecheck # Stylecheck is a replacement for golint
-    - tenv # tenv is analyzer that detects using os.Setenv instead of t.Setenv since Go1.17
     - testpackage # linter that makes you use a separate _test package
     - tparallel # tparallel detects inappropriate usage of t.Parallel() method in your Go test codes
     - unconvert # Remove unnecessary type conversions
@@ -239,12 +231,6 @@ linters:
     #- tagliatelle # Checks the struct tags.
     #- thelper # thelper detects golang test helpers without t.Helper() call and checks the consistency of test helpers
     #- wsl # [too strict and mostly code is not more readable] Whitespace Linter - Forces you to use empty lines!
-    ## deprecated
-    #- exhaustivestruct # [deprecated, replaced by exhaustruct] Checks if all struct's fields are initialized
-    #- golint # [deprecated, replaced by revive] Golint differs from gofmt. Gofmt reformats Go source code, whereas golint prints out style mistakes
-    #- interfacer # [deprecated] Linter that suggests narrower interface types
-    #- maligned # [deprecated, replaced by govet fieldalignment] Tool to detect Go structs that would take less memory if their fields were sorted
-    #- scopelint # [deprecated, replaced by exportloopref] Scopelint checks for unpinned variables in go programs
 
 
 issues: