Removing 9.0.2xx from codeflow (#49025)

Author: v-wuzhai

github-merge-flow.jsonc

@@ -16,13 +16,8 @@
             "MergeToBranch": "release/9.0.1xx",
             "ExtraSwitches": "-QuietComments"
         },        
-        // Automate opening PRs to merge sdk repos from release/9.0.1xx to release/9.0.2xx
+        // Automate opening PRs to merge sdk repos from release/9.0.1xx to release/9.0.3xx
         "release/9.0.1xx":{
-            "MergeToBranch": "release/9.0.2xx",
-            "ExtraSwitches": "-QuietComments"
-        },
-        // Automate opening PRs to merge sdk repos from release/9.0.2xx to release/9.0.3xx
-        "release/9.0.2xx":{
             "MergeToBranch": "release/9.0.3xx",
             "ExtraSwitches": "-QuietComments"
         },