diff --git a/packages/react-dev-utils/eslintFormatter.js b/packages/react-dev-utils/eslintFormatter.js
index dd9710776393735f899f8a0f057823ae27be1a74..b6ba56795760aad4d96e7ed4ab1db1c122ddc6c5 100644
--- a/packages/react-dev-utils/eslintFormatter.js
+++ b/packages/react-dev-utils/eslintFormatter.js
@@ -13,9 +13,6 @@ function isError(message) {
 function formatter(results) {
   let output = '\n';
 
-  let hasErrors = false;
-  let hasWarnings = false;
-
   results.forEach(result => {
     let messages = result.messages;
     if (messages.length === 0) {
@@ -30,7 +27,6 @@ function formatter(results) {
         hasErrors = true;
       } else {
         messageType = 'warn';
-        hasWarnings = true;
       }
 
       let line = message.line || 0;