[source] kernel/trelay: drop Build/Prepare rule in favor of default one

[LEDE Commits]

blogic pushed a commit to source.git, branch master:
https://git.lede-project.org/e09ff19752f1fd96b03088072394e5103c9b6707

commit e09ff19752f1fd96b03088072394e5103c9b6707
Author: Alexandru Ardelean <ardeleanalex at gmail.com>
AuthorDate: Thu Oct 6 09:39:01 2016 +0300

    kernel/trelay: drop Build/Prepare rule in favor of default one
    
    Signed-off-by: Alexandru Ardelean <ardeleanalex at gmail.com>
---
 package/kernel/trelay/Makefile | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/package/kernel/trelay/Makefile b/package/kernel/trelay/Makefile
index 2727ea5..f95115a 100644
--- a/package/kernel/trelay/Makefile
+++ b/package/kernel/trelay/Makefile
@@ -31,11 +31,6 @@ endef
 
 include $(INCLUDE_DIR)/kernel-defaults.mk
 
-define Build/Prepare
-	mkdir -p $(PKG_BUILD_DIR)
-	cp src/Makefile src/trelay.c $(PKG_BUILD_DIR)/
-endef
-
 define Build/Compile
 	$(MAKE) $(KERNEL_MAKEOPTS) SUBDIRS="$(PKG_BUILD_DIR)" modules
 endef