* Remove graph_types from DB.
This is silly since defining them in definitions.inc.php already does the same thing.
Adds missing ones in definitions.inc.php and rewrites others since I already wrote them before I realized they were duplicates.
* remove dead table
* Remove graph_types inserts from schema files.
* update db_schema.yaml
DO NOT DELETE THIS TEXT
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This was previously a pull request that was closed#8721
Not sure why it was closed or if it was abandoned since the branch they had was deleted, but I just put everything back together along with some test data. Kudos to @centralscrutiniser for the code in the original request.
