render: unconditionally disable implicit X11 includes

Even if the X11 backend or Xwayland is enabled, we don't rely on
EGL/egl.h including Xlib headers.

include/wlr/render/egl.h

@@ -9,16 +9,12 @@
 #ifndef WLR_RENDER_EGL_H
 #define WLR_RENDER_EGL_H
 
-#include <wlr/config.h>
-
-#if !WLR_HAS_X11_BACKEND && !WLR_HAS_XWAYLAND
 #ifndef MESA_EGL_NO_X11_HEADERS
 #define MESA_EGL_NO_X11_HEADERS
 #endif
 #ifndef EGL_NO_X11
 #define EGL_NO_X11
 #endif
-#endif
 
 #include <EGL/egl.h>
 #include <EGL/eglext.h>

include/wlr/render/interface.h

@@ -9,16 +9,12 @@
 #ifndef WLR_RENDER_INTERFACE_H
 #define WLR_RENDER_INTERFACE_H
 
-#include <wlr/config.h>
-
-#if !WLR_HAS_X11_BACKEND && !WLR_HAS_XWAYLAND
 #ifndef MESA_EGL_NO_X11_HEADERS
 #define MESA_EGL_NO_X11_HEADERS
 #endif
 #ifndef EGL_NO_X11
 #define EGL_NO_X11
 #endif
-#endif
 
 #include <EGL/egl.h>
 #include <EGL/eglext.h>