[SYCL][NFCI] Remove single_task_lambda_impl helper (#18020)

After #18015 `wrap_kernel` is powerful
enough to substitute it with just a minor tweak.

Author: aelovikov-intel

sycl/include/sycl/handler.hpp

@@ -1616,6 +1616,9 @@ class __SYCL_EXPORT handler {
     KernelWrapper<WrapAsVal, NameT, KernelType, ElementType, PropertiesT>::wrap(
         this, KernelFunc);
 #ifndef __SYCL_DEVICE_ONLY__
+    if constexpr (WrapAsVal == WrapAs::single_task) {
+      throwOnKernelParameterMisuse<KernelName, KernelType>();
+    }
     throwIfActionIsCreated();
     if constexpr (std::is_same_v<MaybeKernelTy, kernel>) {
       // Ignore any set kernel bundles and use the one associated with the
@@ -1653,25 +1656,6 @@ class __SYCL_EXPORT handler {
   // NOTE: to support kernel_handler argument in kernel lambdas, only
   // KernelWrapper<...>::wrap() must be called in this code.
 
-  /// Defines and invokes a SYCL kernel function as a function object type.
-  ///
-  /// If it is a named function object and the function object type is
-  /// globally visible, there is no need for the developer to provide
-  /// a kernel name for it.
-  ///
-  /// \param KernelFunc is a SYCL kernel function.
-  template <
-      typename KernelName, typename KernelType,
-      typename PropertiesT = ext::oneapi::experimental::empty_properties_t>
-  void single_task_lambda_impl(PropertiesT Props,
-                               const KernelType &KernelFunc) {
-    wrap_kernel<WrapAs::single_task, KernelName>(KernelFunc, nullptr /*Kernel*/,
-                                                 Props, range<1>{1});
-#ifndef __SYCL_DEVICE_ONLY__
-    throwOnKernelParameterMisuse<KernelName, KernelType>();
-#endif
-  }
-
   void setStateExplicitKernelBundle();
   void setStateSpecConstSet();
   bool isStateExplicitKernelBundle() const;
@@ -1889,8 +1873,8 @@ class __SYCL_EXPORT handler {
   /// \param KernelFunc is a SYCL kernel function.
   template <typename KernelName = detail::auto_name, typename KernelType>
   void single_task(const KernelType &KernelFunc) {
-    single_task_lambda_impl<KernelName>(
-        ext::oneapi::experimental::empty_properties_t{}, KernelFunc);
+    wrap_kernel<WrapAs::single_task, KernelName>(KernelFunc, nullptr /*Kernel*/,
+                                                 {} /*Props*/, range<1>{1});
   }
 
   template <typename KernelName = detail::auto_name, typename KernelType>
@@ -2224,8 +2208,8 @@ class __SYCL_EXPORT handler {
   std::enable_if_t<ext::oneapi::experimental::is_property_list<
       PropertiesT>::value> single_task(PropertiesT Props,
                                        const KernelType &KernelFunc) {
-    single_task_lambda_impl<KernelName, KernelType, PropertiesT>(Props,
-                                                                 KernelFunc);
+    wrap_kernel<WrapAs::single_task, KernelName>(KernelFunc, nullptr /*Kernel*/,
+                                                 Props, range<1>{1});
   }
 
   template <typename KernelName = detail::auto_name, typename KernelType,