[mutter] clutter: Remove useless OS_LINUX macro

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 1e2610e4f41acceb978d1c5f379d3daae08595c9
Author: Jonas Ådahl <jadahl gmail com>
Date:   Wed May 23 11:24:09 2018 +0200

    clutter: Remove useless OS_LINUX macro
    
    It was unconditionally set to 1.

 clutter/configure.ac                 | 3 ---
 clutter/tests/conform/events-touch.c | 8 ++++----
 2 files changed, 4 insertions(+), 7 deletions(-)
---
diff --git a/clutter/configure.ac b/clutter/configure.ac
index ed778223e..e65dba65d 100644
--- a/clutter/configure.ac
+++ b/clutter/configure.ac
@@ -29,9 +29,6 @@ AC_PROG_SED
 dnl = Preliminary platform checks =============================================
 
 AC_CANONICAL_HOST
-
-AC_DEFINE([OS_LINUX], [1], [Define to 1 if building for Linux])
-
 AC_CACHE_SAVE
 
 dnl = Dependencies =========================================================
diff --git a/clutter/tests/conform/events-touch.c b/clutter/tests/conform/events-touch.c
index 124b821af..c87429794 100644
--- a/clutter/tests/conform/events-touch.c
+++ b/clutter/tests/conform/events-touch.c
@@ -21,7 +21,7 @@
 
 #include <clutter/clutter.h>
 
-#if defined CLUTTER_WINDOWING_X11 && OS_LINUX && HAVE_XINPUT_2_2
+#if defined CLUTTER_WINDOWING_X11 && HAVE_XINPUT_2_2
 
 #include <stdio.h>
 #include <string.h>
@@ -355,12 +355,12 @@ error:
   return 0;
 }
 
-#endif /* defined CLUTTER_WINDOWING_X11 && OS_LINUX && HAVE_XINPUT_2_2 */
+#endif /* defined CLUTTER_WINDOWING_X11 && HAVE_XINPUT_2_2 */
 
 static void
 events_touch (void)
 {
-#if defined CLUTTER_WINDOWING_X11 && OS_LINUX && HAVE_XINPUT_2_2
+#if defined CLUTTER_WINDOWING_X11 && HAVE_XINPUT_2_2
   ClutterActor *stage;
   State state;
 
@@ -384,7 +384,7 @@ events_touch (void)
     g_print ("end result: %s\n", state.pass ? "pass" : "FAIL");
 
   g_assert (state.pass);
-#endif /* defined CLUTTER_WINDOWING_X11 && OS_LINUX && HAVE_XINPUT_2_2 */
+#endif /* defined CLUTTER_WINDOWING_X11 && HAVE_XINPUT_2_2 */
 }
 
 CLUTTER_TEST_SUITE (