[gnote] Do not check for X11

[Aurimas Černius <aurimasc src gnome org>]

commit 4f6954ddef07534de9f9af7c34e29fa3a6d83c47
Author: Aurimas Černius <aurisc4 gmail com>
Date:   Sun Jan 24 14:28:39 2016 +0200

    Do not check for X11

 configure.ac |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 37d09d2..096f564 100644
--- a/configure.ac
+++ b/configure.ac
@@ -71,7 +71,6 @@ fi
 
 PKG_CHECK_MODULES(LIBGLIBMM, [glibmm-2.4 >= $LIBGLIBMM_VERSION])
 PKG_CHECK_MODULES(GTK, [gtk+-3.0 >= $GTK_VERSION])
-PKG_CHECK_MODULES(X, [x11])
 PKG_CHECK_MODULES(LIBGTKMM, [gtkmm-3.0 >= $LIBGTKMM_VERSION])
 PKG_CHECK_MODULES(LIBXML, [libxml-2.0])
 PKG_CHECK_MODULES(LIBXSLT, [libxslt])