Now that the fixed point conversions are equally covered by the new Q types,
the legacy tests for fixedToFloatingPoint and floatingToFixedPoint are
redundant.
Remove them, and replace the existing test cases with equivalant tests
using the new Q4.7 type directly to maintain identical test coverage.
Reviewed-by: Isaac Scott <isaac.scott@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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