Revert "Add string field to RescuePartyResetReported atom"

This reverts commit beca44bb9f6ff6f6bd1ab53fb7c145b91f7cc597.

Reason for revert: Build breakage b/323529140

Change-Id: I7046afc0ad80178f2de67e665db6c9bddaf01734
diff --git a/stats/atoms.proto b/stats/atoms.proto
index bf45600..259e757 100644
--- a/stats/atoms.proto
+++ b/stats/atoms.proto
@@ -3282,7 +3282,6 @@
         REASON_APP_CRASH = 3;
         REASON_APP_NOT_RESPONDING = 4;
         REASON_NATIVE_CRASH_DURING_BOOT = 5;
-        REASON_NETWORK_RELATED_CRASH = 6;
     }
     optional RollbackReasonType rollback_reason = 4;
 
@@ -10035,7 +10034,6 @@
 message RescuePartyResetReported {
     // The rescue level of this reset. A value of 0 indicates missing or unknown level information.
     optional int32 rescue_level = 1;
-    optional string rescue_level_string = 2;
 }
 
 /**