chore: remove enable_cagg_window_functions (#4577)

* chore: remove enable_cagg_window_functions

* chore: put back in.

* chore: put back in.

---------

Co-authored-by: billy-the-fish <iain@tigerdata.com>
Co-authored-by: Anastasiia Tovpeko <114177030+atovpeko@users.noreply.github.com>

Author: billy-the-fish

api/continuous-aggregates/alter_materialized_view.md

@@ -70,7 +70,6 @@ ALTER MATERIALIZED VIEW <view_name> SET ( timescaledb.<argument> =  <value> [, .
 | `timescaledb.compress_segmentby`                                          | TEXT      | No segementation by column.                          | ✖        | Set the list of columns used to segment the compressed data. An identifier representing the source of the data such as `device_id` or `tags_id` is usually a good candidate.                                                                                                                                                                                                                                                                                                                                                                                           |
 | `column_name`                                                             | TEXT      | -                                                    | ✖        | Set the name of the column to order by or segment by.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
 | `timescaledb.compress_chunk_time_interval`                                | TEXT      | -                                                    | ✖        | Reduce the total number of compressed/columnstore chunks for `table`. If you set `compress_chunk_time_interval`, compressed/columnstore chunks are merged with the previous adjacent chunk within `chunk_time_interval` whenever possible. These chunks are irreversibly merged. If you call to [decompress][decompress]/[convert_to_rowstore][convert_to_rowstore], merged chunks are not split up. You can call `compress_chunk_time_interval` independently of other compression settings; `timescaledb.compress`/`timescaledb.enable_columnstore` is not required. |
-| `timescaledb.enable_cagg_window_functions`                                | BOOLEAN   | `false`                                              | ✖        | EXPERIMENTAL: enable window functions on continuous aggregates. Support is experimental, as there is a risk of data inconsistency. For example, in backfill scenarios, buckets could be missed.                                                                                                                                                                                                                                                                                                                                                                        |
 | `timescaledb.chunk_interval` (formerly `timescaledb.chunk_time_interval`) | INTERVAL  | 10x the original hypertable.                         | ✖        | Set the chunk interval. Renamed in $TIMESCALE_DB V2.20.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |