xdisplaycheck: Remove obsolete check.

BUG=105046
TEST=none

Review URL: http://codereview.chromium.org/8676012

Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 86532993de6d66a5ff915f4e32cbd28c5afc24b3
diff --git a/xdisplaycheck.cc b/xdisplaycheck.cc
index 510f6e0..62fe19c 100644
--- a/xdisplaycheck.cc
+++ b/xdisplaycheck.cc
@@ -15,7 +15,7 @@
 #include <time.h>
 #include <X11/Xlib.h>
 
-#if defined(TOUCH_UI) || defined(USE_AURA)
+#if defined(USE_AURA)
 #include <X11/extensions/XInput2.h>
 #endif
 
@@ -48,7 +48,7 @@
     return -1;
   }
 
-#if defined(TOUCH_UI) || defined(USE_AURA)
+#if defined(USE_AURA)
   // Check for XInput2
   int opcode, event, err;
   if (!XQueryExtension(display, "XInputExtension", &opcode, &event, &err)) {