Update JNI java CSV APIs to not use deprecated API

[revans2]

This fixes #9062

[jlowe]

I marked this as a breaking change since it removes DType#getSimpleName.

[revans2]

I marked this as a breaking change since it removes DType#getSimpleName.

Good catch. That API was never supposed to be public, but I guess I missed it when it when it.

[revans2]

Build failure looks like it is related to AST changes in #9045. I'll try to upmerge and see what happens.

[codecov]

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@@               Coverage Diff               @@
##             branch-21.10    #9066   +/-   ##
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  Coverage                ?   10.71%           
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  Files                   ?      114           
  Lines                   ?    19097           
  Branches                ?        0           
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  Hits                    ?     2046           
  Misses                  ?    17051           
  Partials                ?        0           

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[revans2]

@gpucibot merge