cdnsp: Remove unused tracepoints

cdnsp: Remove unused tracepoints

Tracepoints that are defined take up around 5K each, even if they are not
used. If they are defined and not used, then they waste memory for unused
code. Soon unused tracepoints will cause warnings.

Remove the unused tracepoints of the cdnsp subsystem. They are:

cdnsp_defered_event
cdnsp_ep0_halted
cdnsp_free_priv_device
cdnsp_handle_cmd_flush_ep

Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Acked-by: Peter Chen <peter.chen@kernel.org>
Link: https://lore.kernel.org/r/20250829015650.224063821@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>