[SYCL] fix for flaky Windows test link failures. (#7366)

I am not sure why these Windows link failures are flaky, but,
regardless, we don't need to actually link anything for some of these
tests. If the cause is the same as pull/7260 then this should fix it.

Author: cperkinsintel

sycl/test/extensions/properties/properties_kernel_device_has.cpp

@@ -1,5 +1,5 @@
 // RUN: %clangxx -fsycl-device-only -S -Xclang -emit-llvm %s -o - | FileCheck %s --check-prefix CHECK-IR
-// RUN: %clangxx -fsycl -Xclang -verify %s
+// RUN: %clangxx -fsycl -fsyntax-only -Xclang -verify %s
 // expected-no-diagnostics
 
 #include <sycl/sycl.hpp>

sycl/test/extensions/properties/properties_kernel_device_has_macro.cpp

@@ -1,5 +1,5 @@
 // RUN: %clangxx -fsycl-device-only -S -Xclang -emit-llvm %s -o - | FileCheck %s --check-prefix CHECK-IR
-// RUN: %clangxx -fsycl -Xclang -verify %s
+// RUN: %clangxx -fsycl -fsyntax-only -Xclang -verify %s
 // expected-no-diagnostics
 
 #include <sycl/sycl.hpp>

sycl/test/extensions/properties/properties_kernel_sub_group_size.cpp

@@ -1,5 +1,5 @@
 // RUN: %clangxx -fsycl-device-only -S -Xclang -emit-llvm %s -o - | FileCheck %s --check-prefix CHECK-IR
-// RUN: %clangxx -fsycl -Xclang -verify %s
+// RUN: %clangxx -fsycl -fsyntax-only -Xclang -verify %s
 // expected-no-diagnostics
 
 #include <sycl/sycl.hpp>

sycl/test/extensions/properties/properties_kernel_work_group_size.cpp

@@ -1,5 +1,5 @@
 // RUN: %clangxx -fsycl-device-only -S -Xclang -emit-llvm %s -o - | FileCheck %s --check-prefix CHECK-IR
-// RUN: %clangxx -fsycl -Xclang -verify %s
+// RUN: %clangxx -fsycl -fsyntax-only -Xclang -verify %s
 // expected-no-diagnostics
 
 #include <sycl/sycl.hpp>