Disconnect obsolete man pages from the ja_JP.eucJP doc build:

mount_ext2fs, mount_std, mount_umapfs.

They have been disconnected from the build in HEAD in November, 2006,
and June, 2007, respectively.

PR:		docs/115984
Submitted by:	Craig Rodrigues

ja_JP.eucJP/man/man8/Makefile

@@ -138,7 +138,6 @@ MAN8 =	IPXrouted.8\
 	mlxcontrol.8\
 	mount.8\
 	mount_cd9660.8\
-	mount_ext2fs.8\
 	mount_msdosfs.8\
 	mount_nfs.8\
 	mount_ntfs.8\
@@ -146,9 +145,7 @@ MAN8 =	IPXrouted.8\
 	mount_nwfs.8\
 	mount_portalfs.8\
 	mount_smbfs.8\
-	mount_std.8\
 	mount_udf.8\
-	mount_umapfs.8\
 	mount_unionfs.8\
 	mountd.8\
 	moused.8\