remove unnecessary OR

Author: gewarren

.github/policies/auto-merge.yml

@@ -16,11 +16,8 @@ configuration:
             label: ':octocat: auto-merge'
         - targetsBranch:
             branch: main
-        - or:
-            - isActivitySender:
-                user: dotnet-policy-service[bot]
-            - isActivitySender:
-                user: dotnet-policy-service
+        - isActivitySender:
+            user: dotnet-policy-service[bot]
       then:
         - enableAutoMerge:
             mergeMethod: Squash
@@ -35,11 +32,8 @@ configuration:
             label: ':octocat: auto-merge'
         - targetsBranch:
             branch: live
-        - or:
-            - isActivitySender:
-                user: dotnet-policy-service[bot]
-            - isActivitySender:
-                user: dotnet-policy-service
+        - isActivitySender:
+            user: dotnet-policy-service[bot]
       then:
         - enableAutoMerge:
             mergeMethod: Merge