support: remove unused execute_on_blocking with busy waiting

Author: frankist

include/srsran/support/async/execute_on.h

@@ -88,14 +88,6 @@ auto try_defer_to(TaskExecutor& exec)
   return detail::try_execute_on_awaiter<TaskExecutor, false>{exec};
 }
 
-/// \brief Returns an awaitable that resumes the suspended coroutine in a different execution context. If the call
-/// to execute fails, the awaitable will retry it until it succeeds.
-template <typename TaskExecutor>
-auto execute_on_blocking(TaskExecutor& exec)
-{
-  return detail::blocking_execute_on_awaiter<TaskExecutor, true>(exec);
-}
-
 /// \brief Returns an awaitable that resumes the suspended coroutine in a different execution context. If the call
 /// to defer fails, the awaitable will retry it until it succeeds.
 template <typename TaskExecutor>