drm/i915/gt: drop display clock info from gt debugfs

The same info is available in i915_cdclk_info.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/50461f13ab09b162de25d3f3587890548f4db499.1712599670.git.jani.nikula@intel.com

drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c

@@ -392,10 +392,6 @@ void intel_gt_pm_frequency_dump(struct intel_gt *gt, struct drm_printer *p)
 		drm_puts(p, "no P-state info available\n");
 	}
 
-	drm_printf(p, "Current CD clock frequency: %d kHz\n", i915->display.cdclk.hw.cdclk);
-	drm_printf(p, "Max CD clock frequency: %d kHz\n", i915->display.cdclk.max_cdclk_freq);
-	drm_printf(p, "Max pixel clock frequency: %d kHz\n", i915->max_dotclk_freq);
-
 	intel_runtime_pm_put(uncore->rpm, wakeref);
 }