util: remove unnecessary template string

Signed-off-by: Ruben Bridgewater <ruben@bridgewater.de>

PR-URL: #41082
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>

lib/internal/util/inspect.js

@@ -534,7 +534,7 @@ function strEscape(str) {
           continue;
         }
       }
-      result += `${StringPrototypeSlice(str, last, i)}${`\\u${point.toString(16)}`}`;
+      result += `${StringPrototypeSlice(str, last, i)}\\u${point.toString(16)}`;
       last = i + 1;
     }
   }