It's not removing data. The headline is based on a sensationalist story that was long debunked:
A pop-up on one of the US government's data services suggested that it is to be shut down, but the agency that operates it has suggested instead that it will be staying online.
The Environmental Protection Agency's Open Data Web service – which stores information on climate change, life cycle assessment, health impact analysis and environmental justice – was to have its funding removed and will no longer be in operation, people that worked on the plan said. A pop-up on the site appeared to confirm the shutdown, with anyone visiting the Open Data page told that the site will not be operational from Friday.
But since this story was first published, that message has been updated to read: "The data on this Web site will continue to be available on April 28, 2017". The EPA also tweeted to say that the website wasn't going anywhere and that it is "open, working and not going anywhere", though it seemed to be experiencing occasional outages.
The old pages from Obama's administration are fully archived:
https://19january2017snapshot.epa.gov/climate-change-science/causes-climate-change_.html
The datasets are fully there: