Removed unnecesary includes

Author: konradkusiak97

sycl/include/sycl/ext/oneapi/experimental/graph/command_graph.hpp

@@ -13,10 +13,8 @@
 #include "modifiable_graph.hpp"
 #include <sycl/ext/oneapi/experimental/detail/properties/graph_properties.hpp> // for graph_state
 
-#include <functional>  // for function
-#include <memory>      // for shared_ptr
-#include <type_traits> // for true_type
-#include <vector>      // for vector
+#include <functional> // for function
+#include <memory>     // for shared_ptr
 
 namespace sycl {
 inline namespace _V1 {