No longer allow failures for VS2017 on AppVeyor
diff --git a/appveyor.yml b/appveyor.yml
index 0e97589..53f5b39 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -33,8 +33,6 @@
 
 
 matrix:
-    allow_failures:
-        - os: Visual Studio 2017
     exclude:
         - os: Visual Studio 2015
           additional_flags: "/permissive- /std:c++latest"