diff --git a/sky/adaptors/azure.py b/sky/adaptors/azure.py
index 3bd9f2fc630..0cadb0b2bd8 100644
--- a/sky/adaptors/azure.py
+++ b/sky/adaptors/azure.py
@@ -28,7 +28,6 @@
 
 _session_creation_lock = threading.RLock()
 _MAX_RETRY_FOR_GET_SUBSCRIPTION_ID = 5
-_SUBSCRIPTION_HASH_LENGTH = 4
 
 
 @common.load_lazy_modules(modules=_LAZY_MODULES)