ObsoleteFiles.inc: Don't remove /usr/share/et

This directory is in use again.

Fixes:		5105e1e ("krb5: Fix the installed compile_et")

Author: bsdjhb

ObsoleteFiles.inc

@@ -76,7 +76,6 @@ 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