Remove unused header in drivers and modules.

Co-authored-by: Thaddeus Crews <repiteo@outlook.com>

modules/openxr/openxr_api.h

@@ -40,10 +40,7 @@
 #include "core/math/projection.h"
 #include "core/math/transform_3d.h"
 #include "core/math/vector2.h"
-#include "core/os/memory.h"
-#include "core/string/print_string.h"
 #include "core/string/ustring.h"
-#include "core/templates/rb_map.h"
 #include "core/templates/rid_owner.h"
 #include "core/templates/vector.h"
 #include "servers/rendering_server.h"