platform/x86: intel_telemetry: Remove unused telemetry_*_events()

platform/x86: intel_telemetry: Remove unused telemetry_*_events()

The functions:

  - telemetry_add_events()
  - telemetry_update_events()
  - telemetry_reset_events()
  - telemetry_get_eventconfig()

were all added by the commit 378f956e3f93 ("platform/x86: Add Intel
Telemetry Core Driver") in 2016 but have remained unused.

They're each a tiny wrapper that is the only caller through a similarly
named function pointer, and for each function pointer there's a 'def'
empty implementation and a plt implementation.

Remove all of those components for each function.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Link: https://lore.kernel.org/r/20250608012512.377134-2-linux@treblig.org
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>