shim: don't close the cufile driver at exit

cpp/include/kvikio/shim/cufile.hpp

@@ -111,9 +111,11 @@ class cuFileAPI {
 
     // cuFile is supposed to open and close the driver automatically but because of a bug in
     // CUDA 11.8, it sometimes segfault. See <https://github.com/rapidsai/kvikio/issues/159>.
+    // Notice, we don't close the driver at program exit since we are not allowed to call
+    // cuFile after main:
+    // <https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#initialization>
     driver_open();
   }
-  ~cuFileAPI() { driver_close(); }
 #else
   cuFileAPI() { throw std::runtime_error("KvikIO not compiled with cuFile.h"); }
 #endif