xrt: Do not include util headers in xrt headers

This lead to some files getting u_misc for free, and also
other things being pulled in when they shouldn't have been.

src/xrt/auxiliary/util/u_tracked_imu_3dof.c

@@ -7,6 +7,8 @@
  * @ingroup aux_util
  */
 
+#include "util/u_misc.h"
+
 #include "u_tracked_imu_3dof.h"
 
 

src/xrt/drivers/ht_ctrl_emu/ht_ctrl_emu.cpp

@@ -17,6 +17,7 @@
 #include "math/m_space.h"
 #include "math/m_vec3.h"
 
+#include "util/u_misc.h"
 #include "util/u_debug.h"
 #include "util/u_time.h"
 #include "util/u_device.h"

src/xrt/drivers/multi_wrapper/multi.c

@@ -8,6 +8,7 @@
  */
 
 #include "multi.h"
+#include "util/u_misc.h"
 #include "util/u_device.h"
 #include "util/u_debug.h"
 

src/xrt/drivers/qwerty/qwerty_device.c

@@ -9,6 +9,7 @@
 
 #include "qwerty_device.h"
 
+#include "util/u_misc.h"
 #include "util/u_device.h"
 #include "util/u_distortion_mesh.h"
 #include "util/u_var.h"

src/xrt/include/xrt/xrt_tracking.h

@@ -14,7 +14,6 @@
 
 #include "xrt/xrt_defines.h"
 
-#include "util/u_hand_tracking.h"
 
 #ifdef __cplusplus
 extern "C" {

src/xrt/targets/common/target_builder_remote.c

@@ -10,6 +10,7 @@
 #include "xrt/xrt_config_drivers.h"
 #include "xrt/xrt_prober.h"
 
+#include "util/u_misc.h"
 #include "util/u_builders.h"
 #include "util/u_config_json.h"
 #include "util/u_system_helpers.h"

src/xrt/targets/common/target_builder_simulated.c

@@ -10,6 +10,7 @@
 #include "xrt/xrt_config_drivers.h"
 #include "xrt/xrt_prober.h"
 
+#include "util/u_misc.h"
 #include "util/u_debug.h"
 #include "util/u_builders.h"
 #include "util/u_config_json.h"