Remove unexisting VS 13 (conan-io#1320)

danimtb · lasote · commit d55a0e79b664 · 2019-06-10T11:51:20.000+02:00
diff --git a/reference/conanfile/methods.rst b/reference/conanfile/methods.rst
@@ -751,8 +751,6 @@ This is the relation of Visual Studio versions and the compatible toolchain:
 +-----------------------+--------------------+
 | 14                    | v140               |
 +-----------------------+--------------------+
-| 13                    | v120               |
-+-----------------------+--------------------+
 | 12                    | v120               |
 +-----------------------+--------------------+
 | 11                    | v110               |
