Remove feature flag for geoshape decimation
This MR is to remove the feature flag for geoshape decimation as geoshape decimation has been deployed since M16 and the feedback is positive:
- It boosts the GIS map performance 20-30 times (in terms of search and data fetch) after the geoshape is decimated in the client deployments.
- It speeds up the indexing performance as the overhead on geoshape decimation is offset by the performance improvement on the ElasticSearch indexing (geoshape indexing)
Edited by Zhibin Mai