host-lua: compat mode not longer needed by the newest luarocks

Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/lua/lua.mk

@@ -51,10 +51,6 @@ HOST_LUA_DEPENDENCIES =
 HOST_LUA_CFLAGS = -Wall -fPIC -DLUA_USE_DLOPEN -DLUA_USE_POSIX
 HOST_LUA_MYLIBS = -ldl
 
-ifeq ($(BR2_PACKAGE_LUA_5_2),y)
-HOST_LUA_CFLAGS += -DLUA_COMPAT_ALL
-endif
-
 define LUA_BUILD_CMDS
 	$(MAKE) \
 	CC="$(TARGET_CC)" RANLIB="$(TARGET_RANLIB)" \