Disable read/write to ota.warm_reset in recovery mode

Bug: 155372775

Test: treehugger
Change-Id: Ifd34f185e5df98984794dc0cda584f00769eb084
diff --git a/dynamic_partition_control_android.cc b/dynamic_partition_control_android.cc
index c9888ab..1fb2c25 100644
--- a/dynamic_partition_control_android.cc
+++ b/dynamic_partition_control_android.cc
@@ -86,12 +86,6 @@
 // needs to be mapped, this timeout is longer than |kMapTimeout|.
 constexpr std::chrono::milliseconds kMapSnapshotTimeout{5000};
 
-#ifdef __ANDROID_RECOVERY__
-constexpr bool kIsRecovery = true;
-#else
-constexpr bool kIsRecovery = false;
-#endif
-
 DynamicPartitionControlAndroid::~DynamicPartitionControlAndroid() {
   Cleanup();
 }
@@ -1085,7 +1079,7 @@
 }
 
 bool DynamicPartitionControlAndroid::IsRecovery() {
-  return kIsRecovery;
+  return constants::kIsRecovery;
 }
 
 static bool IsIncrementalUpdate(const DeltaArchiveManifest& manifest) {