[source] kernel/wrt55agv2-spidevs: 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/ba7cba95f253081af45c59015a5dd6f11f94af5c

commit ba7cba95f253081af45c59015a5dd6f11f94af5c
Author: Alexandru Ardelean <ardeleanalex at gmail.com>
AuthorDate: Thu Oct 6 09:39:52 2016 +0300

    kernel/wrt55agv2-spidevs: drop Build/Prepare rule in favor of default one
    
    Signed-off-by: Alexandru Ardelean <ardeleanalex at gmail.com>
---
 package/kernel/wrt55agv2-spidevs/Makefile | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/package/kernel/wrt55agv2-spidevs/Makefile b/package/kernel/wrt55agv2-spidevs/Makefile
index a63180b..169f6b4 100644
--- a/package/kernel/wrt55agv2-spidevs/Makefile
+++ b/package/kernel/wrt55agv2-spidevs/Makefile
@@ -29,11 +29,6 @@ MAKE_OPTS:= \
 	CROSS_COMPILE="$(TARGET_CROSS)" \
 	SUBDIRS="$(PKG_BUILD_DIR)"
 
-define Build/Prepare
-	mkdir -p $(PKG_BUILD_DIR)
-	$(CP) ./src/* $(PKG_BUILD_DIR)/
-endef
-
 define Build/Compile
 	$(MAKE) -C "$(LINUX_DIR)" \
 		$(MAKE_OPTS) \