Remove unused imports

Change-Id: I39f25af2b79ea53f7467e7de48d6e172aae41563
diff --git a/src/main/java/com/android/tools/r8/ir/optimize/CodeRewriter.java b/src/main/java/com/android/tools/r8/ir/optimize/CodeRewriter.java
index c0b5245..7cf20c7 100644
--- a/src/main/java/com/android/tools/r8/ir/optimize/CodeRewriter.java
+++ b/src/main/java/com/android/tools/r8/ir/optimize/CodeRewriter.java
@@ -10,14 +10,12 @@
 import com.android.tools.r8.errors.Unreachable;
 import com.android.tools.r8.graph.AppView;
 import com.android.tools.r8.graph.DebugLocalInfo;
-import com.android.tools.r8.graph.DexClass;
 import com.android.tools.r8.graph.DexEncodedMethod;
 import com.android.tools.r8.graph.DexItemFactory;
 import com.android.tools.r8.graph.DexMethod;
 import com.android.tools.r8.graph.DexProto;
 import com.android.tools.r8.graph.DexString;
 import com.android.tools.r8.graph.DexType;
-import com.android.tools.r8.graph.ProgramMethod;
 import com.android.tools.r8.ir.analysis.type.TypeElement;
 import com.android.tools.r8.ir.code.Assume;
 import com.android.tools.r8.ir.code.BasicBlock;
@@ -30,7 +28,6 @@
 import com.android.tools.r8.ir.code.Instruction;
 import com.android.tools.r8.ir.code.InstructionIterator;
 import com.android.tools.r8.ir.code.InstructionListIterator;
-import com.android.tools.r8.ir.code.InvokeInterface;
 import com.android.tools.r8.ir.code.InvokeVirtual;
 import com.android.tools.r8.ir.code.Move;
 import com.android.tools.r8.ir.code.Position;