Removed vision os 2.1

Author: ijunaid

.github/workflows/build.yml

@@ -35,8 +35,7 @@ jobs:
             {os_version: 13, sdk: "appletvos17.2"},
             {os_version: 13, sdk: "watchos10.2"},
             {os_version: 13, sdk: "xros1.0"},
-            {os_version: 15, sdk: "xros2.0"},
-            {os_version: 15, sdk: "xros2.1"}
+            {os_version: 15, sdk: "xros2.0"}
           ]
     steps:
       # To check the github context