remove timestamp from generated ASCIITLD.jflex [LUCENE-9923]

[asfimport]

This causes the generation to always make changes to the file, even if the list of TLDs has changed. Let's avoid this as generating the resultant tokenizer is not trivial :)

Also if we fix this, it allows us to run ./gradlew regenerate --rerun-tasks and have no local changes (idempotency everywhere)

Diffs currently look like this:

--- a/lucene/analysis/common/src/java/org/apache/lucene/analysis/email/ASCIITLD.jflex
+++ b/lucene/analysis/common/src/java/org/apache/lucene/analysis/email/ASCIITLD.jflex
`@@` -16,7 +16,7 `@@`
  */
 // Generated from IANA Root Zone Database <https://www.internic.net/zones/root.zone>
 // file version from 2021 Apr 10, Sat 17:37:00 Coordinated Universal Time
-// generated on 2021 Apr 10, Sat 17:55:26 Coordinated Universal Time
+// generated on 2021 Apr 10, Sat 18:13:07 Coordinated Universal Time
 // by org.apache.lucene.analysis.standard.GenerateJflexTLDMacros

 // #9325: None of the TLDs in {ASCIITLD} is a 1-character-shorter prefix of another TLD

---

Migrated from LUCENE-9923 by Robert Muir (@rmuir), resolved Apr 10 2021
Pull requests: #76

[asfimport]

Robert Muir (@rmuir) (migrated from JIRA)

I think we just want to remove the generated on date here (which changes every time you run it regardless of inputs) and keep the Last-Modified date, which corresponds to the root.zone input file.

[asfimport]

ASF subversion and git services (migrated from JIRA)

Commit f333351 in lucene's branch refs/heads/main from Robert Muir
https://gitbox.apache.org/repos/asf?p=lucene.git;h=f333351

LUCENE-9923: remove always-changing timestamp from ASCIITLD.jflex generation (#76)

This makes regenerate idempotent by removing the new Date() from the
output.

We already have the root.zone's Last-Modified date, which is the one
that matters and only changes when the root.zone changes.

[asfimport]

Adrien Grand (@jpountz) (migrated from JIRA)

Closing after the 9.0.0 release