network/services/ead: drop Build/Prepare rule in favor of default one

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>

package/network/services/ead/Makefile

@@ -44,11 +44,6 @@ MAKE_FLAGS += \
 	LIBS_EAD="$(PKG_BUILD_DIR)/tinysrp/libtinysrp.a $(STAGING_DIR)/usr/lib/libpcap.a" \
 	CFLAGS="$(TARGET_CFLAGS)"
 
-define Build/Prepare
-	mkdir -p $(PKG_BUILD_DIR)
-	$(CP) ./src/* $(PKG_BUILD_DIR)/
-endef
-
 define Package/ead/install
 	$(INSTALL_DIR) $(1)/sbin
 	$(INSTALL_BIN) $(PKG_BUILD_DIR)/ead $(1)/sbin/