remove ifdef gaurds

Author: charan-003

libs/core/executors/include/hpx/executors/explicit_scheduler_executor.hpp

@@ -232,7 +232,7 @@ namespace hpx::execution::experimental {
 
 #if !defined(HPX_HAVE_STDEXEC)
         template <typename F, typename S, typename... Ts>
-            requires(!std::is_integral_v<S>)
+            HPX_CONCEPT_REQUIRES_(!std::is_integral_v<S>)
         friend decltype(auto) tag_invoke(
             hpx::parallel::execution::bulk_sync_execute_t,
             explicit_scheduler_executor const& exec, F&& f, S const& shape,
@@ -244,7 +244,6 @@ namespace hpx::execution::experimental {
         }
 #endif
 
-#if !defined(HPX_HAVE_STDEXEC)
         template <typename F, typename S, typename Future, typename... Ts>
             requires(!std::is_integral_v<S>)
         friend auto tag_invoke(hpx::parallel::execution::bulk_then_execute_t,
@@ -265,7 +264,6 @@ namespace hpx::execution::experimental {
                 bulk(shape,
                     hpx::bind_back(HPX_FORWARD(F, f), HPX_FORWARD(Ts, ts)...));
         }
-#endif
 
     private:
         std::decay_t<BaseScheduler> sched_;

libs/core/executors/include/hpx/executors/thread_pool_scheduler.hpp

@@ -8,23 +8,19 @@
 #pragma once
 
 #include <hpx/assert.hpp>
-#include <hpx/async_base/launch_policy.hpp>
-#include <hpx/concepts/concepts.hpp>
-#include <hpx/errors/try_catch_exception_ptr.hpp>
-#include <hpx/execution_base/completion_scheduler.hpp>
-#include <hpx/execution_base/completion_signatures.hpp>
-#include <hpx/execution_base/receiver.hpp>
-#include <hpx/execution_base/sender.hpp>
-#include <hpx/executors/current_executor.hpp>
-#include <hpx/executors/exception_list.hpp>
-#include <hpx/functional/detail/invoke.hpp>
-#include <hpx/functional/invoke_result.hpp>
+#include <hpx/modules/async_base.hpp>
+#include <hpx/modules/concepts.hpp>
 #include <hpx/modules/errors.hpp>
+#include <hpx/modules/execution.hpp>
+#include <hpx/modules/execution_base.hpp>
+#include <hpx/modules/threading_base.hpp>
+#include <hpx/modules/timing.hpp>
 #include <hpx/modules/topology.hpp>
 
 #include <cstddef>
 #include <exception>
 #include <string>
+#include <type_traits>
 #include <utility>
 
 #if defined(HPX_HAVE_STDEXEC)