diff --git a/legacy/elementary/configure.ac b/legacy/elementary/configure.ac
index 14ac06db29..7f14077d90 100644
--- a/legacy/elementary/configure.ac
+++ b/legacy/elementary/configure.ac
@@ -45,7 +45,6 @@ AC_PROG_CC
 AC_PROG_CC_STDC
 AC_HEADER_STDC
 AC_C_CONST
-AC_C___ATTRIBUTE__
 AC_FUNC_ALLOCA
 
 # pkg-config
diff --git a/legacy/elementary/doc/Doxyfile.in b/legacy/elementary/doc/Doxyfile.in
index 0c1a441961..704bfb631e 100644
--- a/legacy/elementary/doc/Doxyfile.in
+++ b/legacy/elementary/doc/Doxyfile.in
@@ -121,7 +121,7 @@ EXPAND_ONLY_PREDEF     = YES
 SEARCH_INCLUDES        = NO
 INCLUDE_PATH           =
 INCLUDE_FILE_PATTERNS  =
-PREDEFINED             = __UNUSED__= EINA_ARG_NONNULL()= EINA_MALLOC= EINA_WARN_UNUSED_RESULT= EAPI=
+PREDEFINED             = EINA_ARG_NONNULL()= EINA_MALLOC= EINA_WARN_UNUSED_RESULT= EAPI=
 EXPAND_AS_DEFINED      =
 SKIP_FUNCTION_MACROS   = YES
 TAGFILES               =
diff --git a/legacy/elementary/m4/ac_attribute.m4 b/legacy/elementary/m4/ac_attribute.m4
deleted file mode 100644
index 23479a92ac..0000000000
--- a/legacy/elementary/m4/ac_attribute.m4
+++ /dev/null
@@ -1,47 +0,0 @@
-dnl Copyright (C) 2004-2008 Kim Woelders
-dnl Copyright (C) 2008 Vincent Torri <vtorri at univ-evry dot fr>
-dnl That code is public domain and can be freely used or copied.
-dnl Originally snatched from somewhere...
-
-dnl Macro for checking if the compiler supports __attribute__
-
-dnl Usage: AC_C___ATTRIBUTE__
-dnl call AC_DEFINE for HAVE___ATTRIBUTE__ and __UNUSED__
-dnl if the compiler supports __attribute__, HAVE___ATTRIBUTE__ is
-dnl defined to 1 and __UNUSED__ is defined to __attribute__((unused))
-dnl otherwise, HAVE___ATTRIBUTE__ is not defined and __UNUSED__ is
-dnl defined to nothing.
-
-AC_DEFUN([AC_C___ATTRIBUTE__],
-[
-
-AC_MSG_CHECKING([for __attribute__])
-
-AC_CACHE_VAL([ac_cv___attribute__],
-   [AC_TRY_COMPILE(
-       [
-#include <stdlib.h>
-
-int func(int x);
-int foo(int x __attribute__ ((unused)))
-{
-   exit(1);
-}
-       ],
-       [],
-       [ac_cv___attribute__="yes"],
-       [ac_cv___attribute__="no"]
-    )])
-
-AC_MSG_RESULT($ac_cv___attribute__)
-
-if test "x${ac_cv___attribute__}" = "xyes" ; then
-   AC_DEFINE([HAVE___ATTRIBUTE__], [1], [Define to 1 if your compiler has __attribute__])
-   AC_DEFINE([__UNUSED__], [__attribute__((unused))], [Macro declaring a function argument to be unused])
-  else
-    AC_DEFINE([__UNUSED__], [], [Macro declaring a function argument to be unused])
-fi
-
-])
-
-dnl End of ac_attribute.m4