[source] kernel/rtc-rv5c386a: 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/7b3ba5a3a94c10ee31e179065e31ae4374401230

commit 7b3ba5a3a94c10ee31e179065e31ae4374401230
Author: Alexandru Ardelean <ardeleanalex at gmail.com>
AuthorDate: Thu Oct 6 09:38:25 2016 +0300

    kernel/rtc-rv5c386a: drop Build/Prepare rule in favor of default one
    
    Signed-off-by: Alexandru Ardelean <ardeleanalex at gmail.com>
---
 package/kernel/rtc-rv5c386a/Makefile | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/package/kernel/rtc-rv5c386a/Makefile b/package/kernel/rtc-rv5c386a/Makefile
index 79eb4fd..e970982 100644
--- a/package/kernel/rtc-rv5c386a/Makefile
+++ b/package/kernel/rtc-rv5c386a/Makefile
@@ -21,11 +21,6 @@ define KernelPackage/rtc-rv5c386a
   FILES:=$(PKG_BUILD_DIR)/rtc.ko
 endef
 
-define Build/Prepare
-	mkdir -p $(PKG_BUILD_DIR)
-	$(CP) ./src/* $(PKG_BUILD_DIR)/
-endef
-
 define Build/Compile
 	$(MAKE) -C "$(LINUX_DIR)" \
 		CROSS_COMPILE="$(TARGET_CROSS)" \