Remove unused import in LambdaRewriter

Change-Id: Iaffdc487d23185270d97440fbbf518c5c5e5441e
diff --git a/src/main/java/com/android/tools/r8/ir/desugar/LambdaRewriter.java b/src/main/java/com/android/tools/r8/ir/desugar/LambdaRewriter.java
index eb8ba3d..6ae855c 100644
--- a/src/main/java/com/android/tools/r8/ir/desugar/LambdaRewriter.java
+++ b/src/main/java/com/android/tools/r8/ir/desugar/LambdaRewriter.java
@@ -4,7 +4,6 @@
 
 package com.android.tools.r8.ir.desugar;
 
-import com.android.tools.r8.dex.Constants;
 import com.android.tools.r8.graph.AppInfo;
 import com.android.tools.r8.graph.AppView;
 import com.android.tools.r8.graph.Code;