Redis Aof-race doesn't work and isn't a part of the default tests

I noticed that this test, https://github.com/redis/redis/blob/unstable/tests/integration/aof-race.tcl, doesn't work correctly. It was removed immediately after it was added, https://github.com/redis/redis/commit/dcdfd005a0133a347cc0aae54c690cd8c845fed7, so it isn't actually run as part of the CI in any capacity.

I would suggest deleting it, but perhaps someone else wants to get it working.

redis $./runtest --single integration/aof-race
Cleanup: may take some time... OK
Starting test server at port 21079
[ready]: 10158
Testing integration/aof-race
[ready]: 10159
[ready]: 10160
[ready]: 10161
[ready]: 10162
[ready]: 10163
[ready]: 10164
[ready]: 10165
[ready]: 10166
[ready]: 10167
[ready]: 10168
[ready]: 10169
[ready]: 10170
[ready]: 10171
[ready]: 10172
[ready]: 10173
[exception]: Executing test client: assertion:Expected '20000' to be equal to '' (context: type source line 33 file /Users/matolson/git/redis/tests/integration/aof-race.tcl cmd {assert_equal 20000 [$client get foo]} proc ::start_server).
assertion:Expected '20000' to be equal to '' (context: type source line 33 file /Users/matolson/git/redis/tests/integration/aof-race.tcl cmd {assert_equal 20000 [$client get foo]} proc ::start_server)
    while executing
"error "assertion:$expected_err $detail""
    (procedure "assert_failed" line 7)
    invoked from within
"assert_failed "Expected '$value' to be equal to '$expected'" $detail"
    (procedure "assert_equal" line 3)
    invoked from within
"assert_equal 20000 [$client get foo]"
    ("uplevel" body line 3)
    invoked from within
"uplevel 1 $code "
    (procedure "start_server" line 3)
    invoked from within
"start_server [list overrides $config] $code"
    (procedure "start_server_aof" line 4)
    invoked from within
"start_server_aof [list dir $server_path] {
        set client [redis [srv host] [srv port] 0 $::tls]
        assert_equal 20000 [$client get foo]
    ..."
    ("uplevel" body line 22)
    invoked from within
"uplevel 1 $code"
    (procedure "tags" line 12)
    invoked from within
"tags {"aof"} {
    # Specific test for a regression where internal buffers were not properly
    # cleaned after a child responsible for an AOF rewrit..."
    (file "tests/integration/aof-race.tcl" line 10)
    invoked from within
"source $path"
    (procedure "execute_test_file" line 4)
    invoked from within
"execute_test_file $data"
    (procedure "test_client_main" line 10)
    invoked from within
"test_client_main $::test_server_port "