Revert "1.12.0 branch init"

This reverts commit 3a127b6.

Author: jabbacakes

docusaurus.config.js

@@ -240,10 +240,6 @@ module.exports = {
               label: "2.0.0-pre",
               path: "current",
             },
-            "1.12.0": {
-              label: "1.12.0",
-              path: "1.12.0",
-            },
             "1.11.0": {
               label: "1.11.0",
               path: "1.11.0",