Merge pull request MicrosoftDocs#2704 from EvilC0der/patch-1

Update unordered-map-class.md

Author: TylerMSFT

docs/standard-library/unordered-map-class.md

@@ -180,7 +180,6 @@ If the argument key value is not found, then the function throws an object of cl
 #include <unordered_map>
 #include <iostream>
 
-typedef std::unordered_map<char, int> Mymap;
 typedef std::unordered_map<char, int> Mymap;
 int main()
 {