remove unused import from BpfMap

Test: m
Change-Id: Iebdb14ad2ae917c5f1e2e23ea2619106fb092caf
diff --git a/common/device/com/android/net/module/util/BpfMap.java b/common/device/com/android/net/module/util/BpfMap.java
index d171b11..d4ce83b 100644
--- a/common/device/com/android/net/module/util/BpfMap.java
+++ b/common/device/com/android/net/module/util/BpfMap.java
@@ -30,7 +30,6 @@
 import java.nio.ByteOrder;
 import java.util.NoSuchElementException;
 import java.util.Objects;
-import java.util.function.BiConsumer;
 
 /**
  * BpfMap is a key -> value mapping structure that is designed to maintained the bpf map entries.