Move obsolete files to obsolete dir

Bug: 8550444
Change-Id: Ie65eea25da4c41e1128d1d8d8643fb6afe8f41e4
diff --git a/native/jni/Android.mk b/native/jni/Android.mk
index 15bfbbe..e4a4682 100644
--- a/native/jni/Android.mk
+++ b/native/jni/Android.mk
@@ -48,8 +48,9 @@
 LATIN_IME_CORE_SRC_FILES := \
     correction.cpp \
     unigram_dictionary.cpp \
-    words_priority_queue.cpp \
     suggest/core/suggest.cpp \
+    $(addprefix obsolete/, \
+        words_priority_queue.cpp \
     $(addprefix suggest/core/dicnode/, \
         dic_node.cpp \
         dic_node_utils.cpp \