Remove 2102_GI_Emission from tests as it is unstable for now

TestProjects/HDRP_Tests/ProjectSettings/EditorBuildSettings.asset

     path: Assets/GraphicTests/Scenes/2x_Lighting/2005_Area_Light_Meshes.unity
     guid: 359ded33a047fd540b5e19a98547f5e2
   - enabled: 1
-    path: Assets/GraphicTests/Scenes/2x_Lighting/2102_GI_Emission.unity
-    guid: b8f49ca9a12abb4468116e9422139e63
-  - enabled: 1
     path: Assets/GraphicTests/Scenes/2x_Lighting/2201_ReflectionProbes_Priority.unity
     guid: d485acf0535eb4b42a9a3847f4a8274a
   - enabled: 1