Use the following CLI syntax to delete a log filter:
config>log
no filter filter-id
A:ALA-12>config>log>filter# info
----------------------------------------
...
filter 1
description "This allows <n>."
entry 1
action drop
match
application eq "user"
number eq 2001
exit
exit
exit
...
----------------------------------------
A:ALA-12>config>log>filter#
— config>log# no filter 1