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-rw-r--r--ethosu/vela/range_set.py1
1 files changed, 0 insertions, 1 deletions
diff --git a/ethosu/vela/range_set.py b/ethosu/vela/range_set.py
index 64de9709..d7623c5a 100644
--- a/ethosu/vela/range_set.py
+++ b/ethosu/vela/range_set.py
@@ -19,7 +19,6 @@
# Helper classes to track memory accesses for calculating dependencies between Commands.
from enum import IntEnum
-from collections import defaultdict
from functools import lru_cache