Removed tests with negative index
Removed tests with negative index

In preparation for changing positions to use row / column.
Negative indices can be reimplemented later, if necessary.

Signed-off-by: Ole Herman Schumacher Elgesem <d79eaadde0963f215c2e4b9d045775da90a40c64@gmail.com>

olehermanse/nowcode,olehermanse/nowcode