unused imports

Author: jdcormie

binder/src/main/java/io/grpc/binder/ApiConstants.java

@@ -17,9 +17,7 @@
 package io.grpc.binder;
 
 import android.content.Intent;
-import android.content.pm.ServiceInfo;
 import android.os.UserHandle;
-import io.grpc.Attributes;
 import io.grpc.ExperimentalApi;
 import io.grpc.NameResolver;