[source] network/utils/owipcalc: 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/964f8bc4e53830d849f37ee01bf48040d8bf280f

commit 964f8bc4e53830d849f37ee01bf48040d8bf280f
Author: Alexandru Ardelean <ardeleanalex at gmail.com>
AuthorDate: Thu Oct 6 09:27:08 2016 +0300

    network/utils/owipcalc: drop Build/Prepare rule in favor of default one
    
    Signed-off-by: Alexandru Ardelean <ardeleanalex at gmail.com>
---
 package/network/utils/owipcalc/Makefile | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/package/network/utils/owipcalc/Makefile b/package/network/utils/owipcalc/Makefile
index b16f320..fd193ea 100644
--- a/package/network/utils/owipcalc/Makefile
+++ b/package/network/utils/owipcalc/Makefile
@@ -27,12 +27,6 @@ define Package/owipcalc/description
   for dhcp pools.
 endef
 
-
-define Build/Prepare
-	$(INSTALL_DIR) $(PKG_BUILD_DIR)
-	$(CP) ./src/* $(PKG_BUILD_DIR)/
-endef
-
 define Build/Configure
 endef