Removed VS2013 from builds

.gitlab-ci.yml

@@ -53,23 +53,6 @@ VS2015-32-bit:
   tags:
     - VS2015
 
-
-VS2013-64-bit:
-  variables:
-    BUILD_PLATFORM: "VS2013"
-    ARCHITECTURE:   "x64"
-  script: "CI\\Windows.bat"
-  tags:
-    - VS2013
-
-VS2013-32-bit:
-  variables:
-    BUILD_PLATFORM: "VS2013"
-    ARCHITECTURE:   "x32"
-  script: "CI\\Windows.bat"
-  tags:
-    - VS2013
-
 doc:
   script: "CI/ci-doc.sh"
   tags: