Some LOCAL_DROIDDOC_HTML_DIR has "/" in it.

Change-Id: I77ded6ef35cd91625e7988eafe7eed24fb359757
diff --git a/core/droiddoc.mk b/core/droiddoc.mk
index 316054b..2a9cfc6 100644
--- a/core/droiddoc.mk
+++ b/core/droiddoc.mk
@@ -141,7 +141,6 @@
 endif
 ifneq ($(strip $(LOCAL_ADDITIONAL_HTML_DIR)),)
 $(full_target): PRIVATE_ADDITIONAL_HTML_DIR := -htmldir2 $(LOCAL_PATH)/$(LOCAL_ADDITIONAL_HTML_DIR)
-html_dir_files += $(shell find $(LOCAL_PATH)/$(LOCAL_ADDITIONAL_HTML_DIR) -type f)
 else
 $(full_target): PRIVATE_ADDITIONAL_HTML_DIR :=
 endif