Bug 1431129 - Remove no-mixed-spaces-and-tabs from the ESLint config, since no-tabs disallows tabs anyway. r=mossop.

MozReview-Commit-ID: 395itqTz9T8

--HG--
extra : rebase_source : 744f1765e1ee41fcaca608a2821c6f0d7a76d608

tools/lint/eslint/eslint-plugin-mozilla/lib/configs/recommended.js

@@ -263,8 +263,8 @@ module.exports = {
     // No single if block inside an else block
     "no-lonely-if": "error",
 
-    // No mixing spaces and tabs in indent
-    "no-mixed-spaces-and-tabs": ["error", "smart-tabs"],
+    // no-tabs disallows tabs completely.
+    // "no-mixed-spaces-and-tabs": "error",
 
     // No unnecessary spacing
     "no-multi-spaces": ["error", { exceptions: {