Depends on NVIDIA/spark-rapids-jni#1149.

CUDF JNI has a row_conversion.cu that is likely cruft, and not used anywhere else. This was used at one point from spark-rapids, but it has been replaced by the version of row_conversion.cu available in spark-rapids-jni.

Once the differences between these have been reviewed, it should be safe to remove this from CUDF JNI.