GPU: Wshadow compiler directive not needed in HIP Includes System (AliceO2Group#14738)

* TODO: Wshadow compiler directive not needed

* Removed all three lines push, pragma diagnostic, pop

Author: vikasssinghal

GPU/GPUTracking/Base/hip/GPUReconstructionHIPIncludesSystem.h

@@ -22,11 +22,8 @@
 #include <hip/hip_runtime.h>
 #include <hip/hip_ext.h>
 #include <hipcub/hipcub.hpp>
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wshadow" // FIXME: Is this still needed?
 #include <thrust/sort.h>
 #include <thrust/execution_policy.h>
 #include <thrust/device_ptr.h>
-#pragma GCC diagnostic pop
 
 #endif // O2_GPU_RECONSTRUCTIONHIPINCLUDESSYSTEM_H