Remove duplication of bootclasspath in DefaultLibraries

Don't add bootclasspath libraries as classpath dependencies too.

Test: m -j checkbuild
Change-Id: Icb45e45536ce3babab73f67d281ca593edd4ab7f
diff --git a/java/config/config.go b/java/config/config.go
index 3029a5a..4f74ef2 100644
--- a/java/config/config.go
+++ b/java/config/config.go
@@ -26,7 +26,8 @@
 var (
 	pctx = android.NewPackageContext("android/soong/java/config")
 
-	DefaultLibraries = []string{"core-oj", "core-libart", "ext", "framework", "okhttp"}
+	DefaultBootclasspathLibraries = []string{"core-oj", "core-libart"}
+	DefaultLibraries              = []string{"ext", "framework", "okhttp"}
 )
 
 func init() {