Move copying of dex files from dexpreopt_bootjars singleton

The art dex files are copied in the bootclasspath_fragment and the
non-updatable and updatable dex files are copied in the
platform_bootclasspath.

Bug: 177892522
Test: m nothing
Change-Id: I5d3d533d1a7a9f8e7ae20c12eb33029a898a2cd6
diff --git a/java/hiddenapi_singleton.go b/java/hiddenapi_singleton.go
index f6af501..676a0e7 100644
--- a/java/hiddenapi_singleton.go
+++ b/java/hiddenapi_singleton.go
@@ -151,9 +151,7 @@
 
 // Checks to see whether the supplied module variant is in the list of boot jars.
 //
-// Apart from the context this is identical to isModuleInConfiguredListForSingleton.
-//
-// TODO(b/179354495): Avoid having to perform this type of check or if necessary dedup it.
+// TODO(b/179354495): Avoid having to perform this type of check.
 func isModuleInConfiguredList(ctx android.BaseModuleContext, module android.Module, configuredBootJars android.ConfiguredJarList) bool {
 	name := ctx.OtherModuleName(module)