Disable loads via LSC

Disable routing loads vis LSC

Author: dburke4-intel

IGC/common/igc_flags.h

@@ -625,7 +625,6 @@ DECLARE_IGC_REGKEY(bool, EnablePromotionToSampleMlod,          true,
     "Enables promotion of sample and sample_c to sample_mlod and sample_c_mlod instructions when min lod is present", false)
 DECLARE_IGC_REGKEY(bool, DisableCorrectlyRoundedMacros,     false, "Tmp flag to disable correcly rounded macros for BMG+. This flag will be removed in the future.", false)
 DECLARE_IGC_REGKEY(bool, EnableLscSamplerRouting, true, "Enables conversion of LD to LD_L instructions.", false)
-DECLARE_IGC_REGKEY(bool, ForceLscSamplerRoutingSimulationXe3, false, "Force conversion of LD to LD_L instructions on Xe3 simulation", false)
 DECLARE_IGC_REGKEY(bool, EnableSIMD16ForXe2, false, "Enable CS SIMD16 for Xe2", false)
 DECLARE_IGC_REGKEY(bool, EnableSIMD16ForNonWaveXe2, true, "Enable CS SIMD16 for Xe2 if the shader doesn't have wave", false)
 DECLARE_IGC_REGKEY(DWORD, CheckCSSLMLimit, 2, "Check SLM or threads limit on compute shader to turn on Enable2xGRF on DG2+"\