remove two functions conflict with lua5.1 and luajit

src/l52util.c

@@ -58,30 +58,6 @@ void lua_rawsetp (lua_State *L, int index, const void *p){
   lua_rawset(L, index);
 }
 
-int luaL_getmetafield (lua_State *L, int obj, const char *event) {
-  if (!lua_getmetatable(L, obj))  /* no metatable? */
-    return 0;
-  lua_pushstring(L, event);
-  lua_rawget(L, -2);
-  if (lua_isnil(L, -1)) {
-    lua_pop(L, 2);  /* remove metatable and metafield */
-    return 0;
-  }
-  else {
-    lua_remove(L, -2);  /* remove only metatable */
-    return 1;
-  }
-}
-
-int luaL_callmeta (lua_State *L, int obj, const char *event) {
-  obj = lua_absindex(L, obj);
-  if (!luaL_getmetafield(L, obj, event))  /* no metafield? */
-    return 0;
-  lua_pushvalue(L, obj);
-  lua_call(L, 1, 1);
-  return 1;
-}
-
 #endif
 
 int lutil_newmetatablep (lua_State *L, const void *p) {

src/l52util.h

@@ -58,7 +58,7 @@ void luaL_register (lua_State *L, const char *libname, const luaL_Reg *l);
 
 #else                      /* Lua 5.1 */
 
-/* functions form lua 5.2 */
+/* functions from lua 5.2 */
 
 # define lua_absindex(L, i) (((i)>0)?(i):((i)<=LUA_REGISTRYINDEX?(i):(lua_gettop(L)+(i)+1)))
 # define lua_rawlen  lua_objlen
@@ -67,9 +67,6 @@ void  lua_rawgetp   (lua_State *L, int index, const void *p);
 void  lua_rawsetp   (lua_State *L, int index, const void *p);
 void  luaL_setfuncs  (lua_State *L, const luaL_Reg *l, int nup);
 
-int luaL_getmetafield (lua_State *L, int obj, const char *event);
-int luaL_callmeta (lua_State *L, int obj, const char *event);
-
 #endif
 
 int   lutil_newmetatablep (lua_State *L, const void *p);