ext4: remove tracing for FALLOC_FL_NO_HIDE_STALE

FALLOC_FL_NO_HIDE_STALE can't make it past vfs_fallocate (and if the
flag does what the name implies that's a good thing as it would be
highly dangerous).  Remove the dead tracing code for it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20240827065123.1762168-3-hch@lst.de
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>

Author: Christoph Hellwig

include/trace/events/ext4.h

@@ -91,7 +91,6 @@ TRACE_DEFINE_ENUM(ES_REFERENCED_B);
 #define show_falloc_mode(mode) __print_flags(mode, "|",		\
 	{ FALLOC_FL_KEEP_SIZE,		"KEEP_SIZE"},		\
 	{ FALLOC_FL_PUNCH_HOLE,		"PUNCH_HOLE"},		\
-	{ FALLOC_FL_NO_HIDE_STALE,	"NO_HIDE_STALE"},	\
 	{ FALLOC_FL_COLLAPSE_RANGE,	"COLLAPSE_RANGE"},	\
 	{ FALLOC_FL_ZERO_RANGE,		"ZERO_RANGE"})