Do not tell admins that we are replacing their .* with our .*

[rousskov]

acl hasHeaderFoo req_header Foo .*

2022/08/12 11:43:27| WARNING: regular expression '.*' has only
wildcards and matches all strings. Using '.*' instead.

Broken since RE optimization inception (commit 6564dae), but the excessive WARNING was "invisible" to many admins until 61be1d8 started saving early level-0/1 messages to cache.log.