Can remove a friend from the list of friends

lib/helpers/friends_helper.dart

@@ -51,4 +51,15 @@ class FriendsHelper {
 
     return response.code == 200;
   }
+
+  /// Remove a friend from the list
+  Future<bool> removeFriend(int friendID) async {
+    final response = await APIRequest(
+      uri: "friends/remove",
+      needLogin: true,
+      args: {"friendID" : friendID.toString()}
+    ).exec();
+
+    return response.code == 200;
+  }
 }