xfs: drop experimental warnings for bigtime and inobtcount

These two features were merged a year ago, userspace tooling have been
merged, and no serious errors have been reported by the developers.
Drop the experimental tag to encourage wider testing.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Bill O'Donnell <billodo@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>

fs/xfs/xfs_super.c

@@ -1600,10 +1600,6 @@ xfs_fs_fill_super(
 	if (XFS_SB_VERSION_NUM(&mp->m_sb) == XFS_SB_VERSION_5)
 		sb->s_flags |= SB_I_VERSION;
 
-	if (xfs_sb_version_hasbigtime(&mp->m_sb))
-		xfs_warn(mp,
- "EXPERIMENTAL big timestamp feature in use. Use at your own risk!");
-
 	if (mp->m_flags & XFS_MOUNT_DAX_ALWAYS) {
 		bool rtdev_is_dax = false, datadev_is_dax;
 
@@ -1659,10 +1655,6 @@ xfs_fs_fill_super(
 		goto out_filestream_unmount;
 	}
 
-	if (xfs_sb_version_hasinobtcounts(&mp->m_sb))
-		xfs_warn(mp,
- "EXPERIMENTAL inode btree counters feature in use. Use at your own risk!");
-
 	error = xfs_mountfs(mp);
 	if (error)
 		goto out_filestream_unmount;