partially revert commit 65fc9dffe which added handling of the database() function to vtgates.
partially revert commit 65fc9dffe which added handling of the database() function to vtgates.

that commit was intended to fix a problem for Tirsen, but Sugu reports that it did not.
in the process, it broke an invocation of that function by liquibase here, which was not
expecting a full `...@master` target.

Signed-off-by: Alex Charis <d99ce025281221a592128c141ff3ab8fa3e1ba95@hubspot.com>

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