Revert "Fix E2E failures"

This reverts commit 8723efe.

Author: lbushi25

sycl/test-e2e/FreeFunctionKernels/template_specialization.cpp

@@ -93,6 +93,18 @@ void F<float>(int X) {
   volatile float Y = static_cast<float>(X);
 }
 
+template <typename... Args>
+SYCL_EXT_ONEAPI_FUNCTION_PROPERTY(
+    (ext::oneapi::experimental::single_task_kernel))
+void variadic_templated(Args... args) {}
+
+template <>
+SYCL_EXT_ONEAPI_FUNCTION_PROPERTY(
+    (ext::oneapi::experimental::single_task_kernel))
+void variadic_templated<double>(double b) {
+  b = 20.0f;
+}
+
 template <auto *Func, typename T> void test_func() {
   queue Q;
   kernel_bundle bundle =
@@ -161,6 +173,7 @@ int main() {
   test_func_custom_type<A::B::C::TestClass>();
   test_func<F<float>, float>();
   test_func<F<uint32_t>, uint32_t>();
+  test_func<variadic_templated<double>, double>();
   test_func<sum1<3, float>, float>();
   test_accessor();
   test_shared();