Bug 1761614 - Configure eslint to disable check for unused variable "printAttrs" r=Standard8 DONTBUILD

Differential Revision: https://phabricator.services.mozilla.com/D152949

.eslintrc.js

@@ -205,7 +205,6 @@ module.exports = {
       excludedFiles: [
         // These are suitable as good first bugs, take one or two related lines
         // per bug.
-        "caps/tests/unit/test_origin.js",
         "extensions/permissions/**",
         "image/test/unit/**",
         "intl/uconv/tests/unit/test_bug340714.js",

caps/tests/unit/test_origin.js

@@ -51,6 +51,7 @@ function checkSandboxOriginAttributes(arr, attrs, options) {
 }
 
 // utility function useful for debugging
+// eslint-disable-next-line no-unused-vars
 function printAttrs(name, attrs) {
   info(
     name +