Remove unused import in ArrayConstructionSimplifier

Change-Id: I78e1f1e50033bb1b9656583c159cfad8da058c04

src/main/java/com/android/tools/r8/ir/conversion/passes/ArrayConstructionSimplifier.java

diff --git a/src/main/java/com/android/tools/r8/ir/conversion/passes/ArrayConstructionSimplifier.java b/src/main/java/com/android/tools/r8/ir/conversion/passes/ArrayConstructionSimplifier.java
index 779c428..f2ff7a4 100644
--- a/src/main/java/com/android/tools/r8/ir/conversion/passes/ArrayConstructionSimplifier.java
+++ b/src/main/java/com/android/tools/r8/ir/conversion/passes/ArrayConstructionSimplifier.java
@@ -10,7 +10,6 @@
 import com.android.tools.r8.graph.DexTypeUtils;
 import com.android.tools.r8.ir.code.ArrayPut;
 import com.android.tools.r8.ir.code.BasicBlock;
-import com.android.tools.r8.ir.code.BasicBlockInstructionIterator;
 import com.android.tools.r8.ir.code.IRCode;
 import com.android.tools.r8.ir.code.Instruction;
 import com.android.tools.r8.ir.code.InstructionListIterator;