remove #pragma multi_compile for VR stuff

ScriptableRenderPipeline/LightweightPipeline/LWRP/Editor/ShaderGraph/lightweightUnlitPass.template

     #pragma prefer_hlslcc gles
     #pragma vertex vert
     #pragma fragment frag
-    #pragma multi_compile _ UNITY_SINGLE_PASS_STEREO STEREO_INSTANCING_ENABLE STEREO_MULTIVIEW_ENABLE
     #pragma multi_compile_fog
     #pragma shader_feature _SAMPLE_GI
     #pragma shader_feature _ _ALPHATEST_ON _ALPHABLEND_ON