FILEFORMAT.md: drop some text from the `command` section

Special meanings of URLs became outdated, and it's also no longer
necessary to pass the test number via the URL or domain anymore.
Delete the text.

Follow-up to c6f1b0ff49268817101ac1734f43074fcc8775b2 #19429

Closes #19503

diff --git a/docs/tests/FILEFORMAT.md b/docs/tests/FILEFORMAT.md
index 2e0648267ed1378d47135c036886795e6800edf6..df5eed8ac694ae4ac5acb5fb5c6f4425d0429a97 100644 (file)
--- a/docs/tests/FILEFORMAT.md
+++ b/docs/tests/FILEFORMAT.md
@@ -582,18 +582,6 @@ Command line to run.
 If the command spans multiple lines, they are concatenated with a space added
 between them.
 
-Note that the URL that gets passed to the server actually controls what data
-that is returned. The last slash in the URL must be followed by a number. That
-number (N) is used by the test-server to load test case N and return the data
-that is defined within the `<reply><data></data></reply>` section.
-
-If there is no test number found above, the HTTP test server uses the number
-following the last dot in the given hostname (made so that a CONNECT can still
-pass on test number) so that "foo.bar.123" gets treated as test case
-123. Alternatively, if an IPv6 address is provided to CONNECT, the last
-hexadecimal group in the address is used as the test number. For example the
-address "[1234::ff]" would be treated as test case 255.
-
 Set `type="perl"` to write the test case as a perl script. It implies that
 there is no memory debugging and valgrind gets shut off for this test.