Remove tweet from historical alert SQL generation

[esloch]

Description

Remove the archived tweet field from historical alert SQL/data generation.

The tweet column is planned for removal from the historical alert tables, but AlertTools still writes it through tabela_historico() and write_alerta().

Required work

• remove tweet from historical alert output generated by tabela_historico();
• remove tweet from write_alerta() SQL for dengue, chikungunya and zika historical alert tables;
• keep the generated SQL compatible with:
  • Municipio.Historico_alerta;
  • Municipio.Historico_alerta_chik;
  • Municipio.Historico_alerta_zika;
• review exported getTweet() and mark it deprecated, archived or unused if it is no longer part of active workflows;
• add tests for tweet-free generated data frames and SQL;
• confirm AlertaDengueAnalise can run with the updated AlertTools.

Out of scope

• dropping the database column;
• changing unrelated historical alert fields;
• changing AlertaDengue API behavior;
• changing production data.

Acceptance criteria

• tabela_historico() no longer requires or emits tweet;
• write_alerta() no longer writes tweet;
• generated SQL does not reference the tweet column;
• tests cover dengue, chikungunya and zika SQL generation;
• AlertaDengueAnalise integration path is verified;
• database migration in AlertaDengue is unblocked.