krb5: Remove et directory

Reported and patch by:	"Herbert J. Skuhra" <[email protected]>
Fixes:			9a726ef241

ObsoleteFiles.inc

@@ -61,6 +61,7 @@ OLD_FILES+=usr/lib/libopencsd.so
 
 # 20250801: Move compile_et to /usr/sbin
 OLD_FILES+=usr/share/et/compile_et
+OLD_DIRS+=usr/share/et
 
 # 20250728: zfsboot (MBR) removed
 OLD_FILES+=boot/zfsboot

etc/mtree/BSD.usr.dist

@@ -267,8 +267,6 @@
         ..
         dtrace
         ..
-        et
-        ..
         examples
             BSD_daemon
             ..