Check for unused function arguments (#6583)

* eslint: Check for unused function arguments

* eslint: Ignore unused '_' in argument list

Also allow any number of '_' e.g., '__' or '___' which is to be used sparingly

* Remove and rename unused arguments

1 files changed, 1 insertions, 1 deletions

diff --git a/test/unit/app/edge-encryptor-test.js b/test/unit/app/edge-encryptor-test.js
index 1a6255b36..52817cd09 100644
--- a/test/unit/app/edge-encryptor-test.js
+++ b/test/unit/app/edge-encryptor-test.js
@@ -83,7 +83,7 @@ describe('EdgeEncryptor', function () {
       edgeEncryptor.encrypt(password, data)
         .then(function (encryptedData) {
           edgeEncryptor.decrypt('wrong password', encryptedData)
-          .then(function (decryptedData) {
+          .then(function () {
             assert.fail('could decrypt with wrong password')
             done()
           })