intel-graphics-compiler: remove INSTALL_SPIRVDLL

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-1
pkgs/development/compilers/intel-graphics-compiler/default.nix
··· 84 84 "-Wno-dev" 85 85 "-DVC_INTRINSICS_SRC=${vc_intrinsics_src}" 86 86 "-DIGC_OPTION__SPIRV_TOOLS_MODE=Prebuilds" 87 - "-DINSTALL_SPIRVDLL=0" 88 87 "-DCCLANG_BUILD_PREBUILDS=ON" 89 88 "-DCCLANG_BUILD_PREBUILDS_DIR=${prebuilds}" 90 89 "-DIGC_PREFERRED_LLVM_VERSION=${getVersion llvm}"