Remove test scenario acl-ip-address-denied for now

Remove test scenario acl-ip-address-denied for now

It works on some systems but fails on others with:

    fk@test-vm ~/git/privoxy/tests/cts $./run-privoxy-tests.sh -t acl-ip-address-denied
    Test scenario: acl-ip-address-denied
    Overwriting default TESTDIR with /home/fk/git/privoxy/tests/cts/acl-ip-address-denied/data
    ********* System characteristics ********
    * curl 7.85.0-DEV (amd64-unknown-freebsd14.2)
    * libcurl/7.85.0-DEV OpenSSL/3.0.15 zlib/1.3.1
    * Features: alt-svc AsynchDNS Debug HSTS HTTPS-proxy IPv6 Largefile libz NTLM NTLM_WB SSL threadsafe TLS-SRP TrackMemory UnixSockets
    * Disabled:
    * Host: test-vm
    * System: FreeBSD test-vm 14.2-STABLE ElectroBSD 14.2-STABLE #0: Tue Dec 31 13:16:10 UTC 2024     elektropunker@ElectroBSD-20241231-f500004c12e1:/usr/obj/usr/src/amd64.amd64/sys/ELECTRO_BLOAT amd64
    * OS: freebsd
    *
    *** DISABLES memory tracking when using threaded resolver
    *
    * Servers: SSL HTTP-IPv6 HTTP-unix FTP-IPv6
    * Env:
    * Seed: 207549
    *****************************************
    test 0001...[Request from denied IP address]

    curl returned 52, when expecting 56
     exit FAILED

     - abort tests
    TESTDONE: 1 tests were considered during 0 seconds.
    TESTDONE: 0 tests out of 1 reported OK: 0%

    TESTFAIL: These test cases failed: 1

This reverts commit 13778c50cddb5458b180a378d7066f9890ba5345.