Improve lancelot test case for recursive ShaderEffectSource

Choose a rotation degree which makes it more obviously visible if
it gets applied multiple times, and which avoids the risk of
an accidental match by rotating a full round.

As a drive-by, remove the second recursive test case, as it does not
test anything other than the first.

Change-Id: I019743cd8a85763c4704019f7fb7b24c3451308c
Pick-to: 5.15
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>

0 files changed, 0 insertions, 0 deletions