AppVeyor: remove redundant builds
Remove the Visual Studio 2012 and 2013 builds as they add little value.
Ref: https://github.com/curl/curl/pull/3606
Closes https://github.com/curl/curl/pull/3614
diff --git a/appveyor.yml b/appveyor.yml
index d6d5907..c23723b 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -30,20 +30,6 @@
HTTP_ONLY: OFF
TESTING: ON
SHARED: OFF
- - PRJ_GEN: "Visual Studio 11 2012 Win64"
- PRJ_CFG: Debug
- OPENSSL: OFF
- WINSSL: OFF
- HTTP_ONLY: OFF
- TESTING: ON
- SHARED: OFF
- - PRJ_GEN: "Visual Studio 12 2013 Win64"
- PRJ_CFG: Debug
- OPENSSL: OFF
- WINSSL: OFF
- HTTP_ONLY: OFF
- TESTING: ON
- SHARED: OFF
- PRJ_GEN: "Visual Studio 14 2015 Win64"
PRJ_CFG: Debug
OPENSSL: OFF