revert changes in gpu_atomics.h, see !477

src/pystencils/include/pystencils_runtime/bits/gpu_atomics.h

@@ -29,10 +29,6 @@ __device__ __forceinline__ float atomicMul(float* address, float val) {
     return __int_as_float(old);
 }
 
-//  Apparently HIP implements atomic min/max for floating point:
-//  https://rocmdocs.amd.com/projects/HIP/en/latest/how-to/hip_cpp_language_extensions.html#atomic-functions
-#ifndef __HIPCC_RTC__
-
 // - atomicMin (double/float)
 //   see https://stackoverflow.com/questions/17399119/how-do-i-use-atomicmax-on-floating-point-values-in-cuda
 __device__ __forceinline__ double atomicMin(double *address, double val)
@@ -84,5 +80,3 @@ __device__ __forceinline__ float atomicMax(float *address, float val)
     }
     return __int_as_float(ret);
 }
-
-#endif