drm/debugfs: drop unneeded DEBUG_FS guard

The Makefile enables/disables the file compilation depending on
CONFIG_DEBUG_FS.
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231223183301.78332-1-dario.binacchi@amarulasolutions.com

drivers/gpu/drm/drm_debugfs.c

@@ -45,8 +45,6 @@
 #include "drm_crtc_internal.h"
 #include "drm_internal.h"
 
-#if defined(CONFIG_DEBUG_FS)
-
 /***************************************************
  * Initialization, etc.
  **************************************************/
@@ -647,5 +645,3 @@ void drm_debugfs_encoder_remove(struct drm_encoder *encoder)
 	debugfs_remove_recursive(encoder->debugfs_entry);
 	encoder->debugfs_entry = NULL;
 }
-
-#endif /* CONFIG_DEBUG_FS */