Revert "uefi.8: mention boot1.efi"

This reverts commit a8ec81e798

Revert D27782.  imp@ pointed out that bsdinstall has been updated, and gpart
bootcode isn't used with EFI.

share/man/man8/uefi.8

@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd December 28, 2020
+.Dd May 9, 2020
 .Dt UEFI 8
 .Os
 .Sh NAME
@@ -118,15 +118,6 @@ system console is automatically selected when booting via
 .Bl -tag -width /boot/loader -compact
 .Nm
 bootstrap
-.It Pa /boot/boot1.efi
-.Xr msdosfs 5
-FAT file system image
-used by
-.Xr bsdinstall 8
-and the
-.Ar bootcode
-argument of
-.Xr gpart 8 .
 .It Pa /boot/loader.efi
 Final stage bootstrap
 .It Pa /boot/kernel/kernel