removed illegal characters

Author: travissarles

tutorials/tour/_posts/2017-02-13-higher-order-functions.md

@@ -107,10 +107,9 @@ def urlBuilder(ssl: Boolean, domainName: String): (String, String) => String = {
   val schema = if (ssl) "https://" else "http://"
   (endpoint: String, query: String) => s"$schema$domainName/$endpoint?$query"
 }
-​
+
 val domainName = "www.example.com"
 def getURL = urlBuilder(ssl=true, domainName)
-​
 val endpoint = "users"
 val query = "id=1"
 val url = getURL(endpoint, query) // "https://www.example.com/users?id=1": String