bug fix went in for terrain legacy gfx test cases so turning them back on

GraphicsTests/LegacyRenderer/Assets/Scenes/082-TerrainSplatLit.unity

@@ -933,56 +933,6 @@ Transform:
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-    Reason: scene causes a crash in stereo mode.  Bug 1173435
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GraphicsTests/LegacyRenderer/Assets/Scenes/167-TerrGrassFade.unity

@@ -426,53 +426,3 @@ MonoBehaviour:
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     PerPixelCorrectnessThreshold: 0
     AverageCorrectnessThreshold: 0.01
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-    Reason: this scene crashes in stereo mode.  Bug 1173435
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