[source] network/ipv6/map: 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/d0345c6bb6f1cc983a24d9a3ecc0049353d27f6e

commit d0345c6bb6f1cc983a24d9a3ecc0049353d27f6e
Author: Alexandru Ardelean <ardeleanalex at gmail.com>
AuthorDate: Thu Oct 6 09:26:34 2016 +0300

    network/ipv6/map: drop Build/Prepare rule in favor of default one
    
    Signed-off-by: Alexandru Ardelean <ardeleanalex at gmail.com>
---
 package/network/ipv6/map/Makefile | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/package/network/ipv6/map/Makefile b/package/network/ipv6/map/Makefile
index af6f758..8cc1afe 100644
--- a/package/network/ipv6/map/Makefile
+++ b/package/network/ipv6/map/Makefile
@@ -30,11 +30,6 @@ define Package/map/description
  configuration details.
 endef
 
-define Build/Prepare
-	mkdir -p $(PKG_BUILD_DIR)
-	$(CP) ./src/* $(PKG_BUILD_DIR)/
-endef
-
 define Package/map/install
 	$(INSTALL_DIR) $(1)/lib/netifd/proto
 	$(INSTALL_BIN) ./files/map.sh $(1)/lib/netifd/proto/map.sh