[source] network/config/swconfig: 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/b8135a5b969cab98719895dabe7573e33dea4ca3

commit b8135a5b969cab98719895dabe7573e33dea4ca3
Author: Alexandru Ardelean <ardeleanalex at gmail.com>
AuthorDate: Thu Oct 6 09:24:10 2016 +0300

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

diff --git a/package/network/config/swconfig/Makefile b/package/network/config/swconfig/Makefile
index f4ba3a9..d1c8fd7 100644
--- a/package/network/config/swconfig/Makefile
+++ b/package/network/config/swconfig/Makefile
@@ -30,11 +30,6 @@ TARGET_CPPFLAGS := \
 	$(TARGET_CPPFLAGS) \
 	-I$(LINUX_DIR)/user_headers/include
 
-define Build/Prepare
-	mkdir -p $(PKG_BUILD_DIR)
-	$(CP) ./src/* $(PKG_BUILD_DIR)/
-endef
-
 define Build/Compile
 	CFLAGS="$(TARGET_CPPFLAGS) $(TARGET_CFLAGS)" \
 	$(MAKE) -C $(PKG_BUILD_DIR) \