loader.efi.8: Remove rogue duplicated lines

Fixes:		871911a ("loader.efi(8): beef up the updating the ESP")
MFC after:	1 week

stand/man/loader.efi.8

@@ -30,7 +30,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd August 20, 2024
+.Dd September 3, 2024
 .Dt LOADER.EFI 8
 .Os
 .Sh NAME
@@ -450,9 +450,6 @@ copy the loader to the default location:
 # cp /boot/loader.efi /boot/efi/EFI/BOOT/BOOTX64.EFI
 .Ed
 .Pp
-.Bd -literal -offset indent
-# umount /boot/efi
-.Ed
 Finally, if you mounted the ESP, you may wish to unmount it.
 .Bd -literal -offset indent
 # umount /boot/efi