fs: ubifs: drop __DATE__ and __TIME__

__DATE__ and __TIME__ makes the build non-deterministic.
Drop the debug message using them.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>

fs/ubifs/super.c

@@ -734,7 +734,6 @@ static int mount_ubifs(struct ubifs_info *c)
 	ubifs_msg("reserved for root:  %llu bytes (%llu KiB)",
 		c->report_rp_size, c->report_rp_size >> 10);
 
-	dbg_msg("compiled on:         " __DATE__ " at " __TIME__);
 	dbg_msg("min. I/O unit size:  %d bytes", c->min_io_size);
 	dbg_msg("LEB size:            %d bytes (%d KiB)",
 		c->leb_size, c->leb_size >> 10);