Removed post-link and pre-unlink scripts

They provided a crutch, which is now handled by
intel-gpu-ocl-icd-system conda package, which a user
may install as needed.

Since MKL currently requires OpenCL GPU device to be
available, dpnp has run-time dependency on
intel-gpu-ocl-icd-system to make OpenCL GPU device
discoverable by OpenCL loader from Python environment.

Author: oleksandr-pavlyk

conda-recipe/build.sh

@@ -47,6 +47,3 @@ fi
 # need to create this folder so ensure that .dpctl-post-link.sh can work correctly
 mkdir -p $PREFIX/etc/OpenCL/vendors
 echo "dpctl creates symbolic link to system installed /etc/OpenCL/vendors/intel.icd as a work-around." > $PREFIX/etc/OpenCL/vendors/.dpctl_readme
-
-cp $RECIPE_DIR/dpctl-post-link.sh $PREFIX/bin/.dpctl-post-link.sh
-cp $RECIPE_DIR/dpctl-pre-unlink.sh $PREFIX/bin/.dpctl-pre-unlink.sh