Drop X11 headers (unused) (#1252)

* Move libX11 header under Xwayland support

In file included from ../src/layout/../defines.hpp:1,
                 from ../src/layout/IHyprLayout.hpp:3,
                 from ../src/layout/IHyprLayout.cpp:1:
../src/layout/../includes.hpp:9:10: fatal error: X11/Xlib.h: No such file or directory
    9 | #include <X11/Xlib.h>
      |          ^~~~~~~~~~~~

* Drop unused X11 headers

src/includes.hpp

@@ -6,7 +6,6 @@
 #pragma diag_suppress 1696
 #endif
 
-#include <X11/Xlib.h>
 #include <getopt.h>
 #include <libinput.h>
 #include <linux/input-event-codes.h>
@@ -109,7 +108,6 @@ extern "C" {
 #ifndef NO_XWAYLAND
 #include <wlr/backend/x11.h>
 #include <wlr/xwayland.h>
-#include <X11/Xproto.h>
 #endif
 }