gallium: remove trace module injection from various state trackers

Components such as state trackers, drivers, etc, should be free to be
recombined in arbtrary ways to build driver stacks.  They should not
be reaching out and trying to build the stack themselves - this is now
expected to be handled by the "target" abstraction.

src/gallium/state_trackers/python/st_device.c

@@ -34,7 +34,6 @@
 #include "util/u_math.h"
 #include "util/u_memory.h"
 #include "util/u_simple_shaders.h"
-#include "trace/tr_public.h"
 
 #include "st_device.h"
 #include "st_winsys.h"
@@ -85,10 +84,6 @@ st_device_create(boolean hardware)
    else
       screen = st_software_screen_create();
 
-   screen = trace_screen_create(screen);
-   if (!screen)
-      goto no_screen;
-
    st_dev = CALLOC_STRUCT(st_device);
    if (!st_dev)
       goto no_device;