Disable unused linter

Currently, golangci-lint has some issues that make it fail randomly.
Disabling the `unused` linter seems to improve things, so let's do that
until golangci-lint has a fix. See:

- golangci/golangci-lint#827
- golangci/golangci-lint#885

.circleci/config.yml

@@ -22,7 +22,7 @@ jobs:
           command: |
             curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s v1.21.0
             sudo cp ./bin/golangci-lint $GOPATH/bin/
-            golangci-lint run -E gofmt -E unconvert -E misspell -E whitespace
+            golangci-lint run -E gofmt -E unconvert -E misspell -E whitespace -D unused
       - save_cache:
           key: v1-gopkg
           paths:

scripts/lint.sh

@@ -11,7 +11,7 @@ if git grep -l \
 fi
 
 curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s v1.22.1
-bin/golangci-lint run -E gofmt -E unconvert -E misspell -E whitespace --timeout 2m --max-same-issues 10
+bin/golangci-lint run -E gofmt -E unconvert -E misspell -E whitespace -D unused --timeout 2m --max-same-issues 10
 
 npm install [email protected] prettier eslint-plugin-prettier eslint-config-cozy-app
 ./node_modules/.bin/eslint "assets/scripts/**" tests/integration/konnector/*.js