Revert `tests/testdata` changes and address flake8 issues

tests/testdata/pile_bookcorpus2-v1-res.json

-{"results": {"pile_bookcorpus2": {"bits_per_byte": 1.6780040419457868e-06, "byte_perplexity": 1.000001163104447, "word_perplexity": 1.0000066499426599}}, "versions": {"pile_bookcorpus2": 1}}
+{"results": {"pile_bookcorpus2": {"bits_per_byte": 1.6780040419457868e-06, "byte_perplexity": 1.000001163104447, "word_perplexity": 1.0000066499426599}}, "versions": {"pile_bookcorpus2": 1}}
\ No newline at end of file

tests/testdata/pile_books3-v0-loglikelihood_rolling

-0f8f36f705b999b6d55fa72ff89a82793dd1cb568ab1f8727a6a2086a12b9410
+0f8f36f705b999b6d55fa72ff89a82793dd1cb568ab1f8727a6a2086a12b9410
\ No newline at end of file

tests/testdata/pile_books3-v0-res.json

-{"results": {"pile_books3": {"bits_per_byte": 8.942486206275221e-07, "byte_perplexity": 1.0000008942490204, "word_perplexity": 1.0000052870063607}}, "versions": {"pile_books3": 0}}
+{"results": {"pile_books3": {"bits_per_byte": 8.942486206275221e-07, "byte_perplexity": 1.0000008942490204, "word_perplexity": 1.0000052870063607}}, "versions": {"pile_books3": 0}}
\ No newline at end of file

tests/testdata/pile_books3-v1-loglikelihood_rolling

-0f8f36f705b999b6d55fa72ff89a82793dd1cb568ab1f8727a6a2086a12b9410
+0f8f36f705b999b6d55fa72ff89a82793dd1cb568ab1f8727a6a2086a12b9410
\ No newline at end of file

tests/testdata/pile_books3-v1-res.json

-{"results": {"pile_books3": {"bits_per_byte": 1.2901280503011222e-06, "byte_perplexity": 1.0000008942490204, "word_perplexity": 1.0000052870063607}}, "versions": {"pile_books3": 1}}
+{"results": {"pile_books3": {"bits_per_byte": 1.2901280503011222e-06, "byte_perplexity": 1.0000008942490204, "word_perplexity": 1.0000052870063607}}, "versions": {"pile_books3": 1}}
\ No newline at end of file

tests/testdata/pile_dm-mathematics-v0-loglikelihood_rolling

-d5b7967c0ece8b816f3921a8bd0fad23365349e935b491595e2ad1135af42da6
+d5b7967c0ece8b816f3921a8bd0fad23365349e935b491595e2ad1135af42da6
\ No newline at end of file

tests/testdata/pile_dm-mathematics-v0-res.json

-{"results": {"pile_dm-mathematics": {"bits_per_byte": 6.176600873627999e-05, "byte_perplexity": 1.0000617679162955, "word_perplexity": 1.0002875035042451}}, "versions": {"pile_dm-mathematics": 0}}
+{"results": {"pile_dm-mathematics": {"bits_per_byte": 6.176600873627999e-05, "byte_perplexity": 1.0000617679162955, "word_perplexity": 1.0002875035042451}}, "versions": {"pile_dm-mathematics": 0}}
\ No newline at end of file

tests/testdata/pile_dm-mathematics-v1-loglikelihood_rolling

-d5b7967c0ece8b816f3921a8bd0fad23365349e935b491595e2ad1135af42da6
+d5b7967c0ece8b816f3921a8bd0fad23365349e935b491595e2ad1135af42da6
\ No newline at end of file

tests/testdata/pile_dm-mathematics-v1-res.json

-{"results": {"pile_dm-mathematics": {"bits_per_byte": 8.910951449933553e-05, "byte_perplexity": 1.0000617679162955, "word_perplexity": 1.0002875035042451}}, "versions": {"pile_dm-mathematics": 1}}
+{"results": {"pile_dm-mathematics": {"bits_per_byte": 8.910951449933553e-05, "byte_perplexity": 1.0000617679162955, "word_perplexity": 1.0002875035042451}}, "versions": {"pile_dm-mathematics": 1}}
\ No newline at end of file

tests/testdata/pile_enron-v0-loglikelihood_rolling

-4baa6ccdc9e3aa9921675ab4400d5e89d7b546b844a8ea28f6461d649066418a
+4baa6ccdc9e3aa9921675ab4400d5e89d7b546b844a8ea28f6461d649066418a
\ No newline at end of file

tests/testdata/pile_enron-v0-res.json

-{"results": {"pile_enron": {"bits_per_byte": 0.0003163902828673244, "byte_perplexity": 1.000316440339552, "word_perplexity": 1.00224668051869}}, "versions": {"pile_enron": 0}}
+{"results": {"pile_enron": {"bits_per_byte": 0.0003163902828673244, "byte_perplexity": 1.000316440339552, "word_perplexity": 1.00224668051869}}, "versions": {"pile_enron": 0}}
\ No newline at end of file

tests/testdata/pile_enron-v1-loglikelihood_rolling

-4baa6ccdc9e3aa9921675ab4400d5e89d7b546b844a8ea28f6461d649066418a
+4baa6ccdc9e3aa9921675ab4400d5e89d7b546b844a8ea28f6461d649066418a
\ No newline at end of file

tests/testdata/pile_enron-v1-res.json

-{"results": {"pile_enron": {"bits_per_byte": 0.0004564546920781453, "byte_perplexity": 1.000316440339552, "word_perplexity": 1.00224668051869}}, "versions": {"pile_enron": 1}}
+{"results": {"pile_enron": {"bits_per_byte": 0.0004564546920781453, "byte_perplexity": 1.000316440339552, "word_perplexity": 1.00224668051869}}, "versions": {"pile_enron": 1}}
\ No newline at end of file

tests/testdata/pile_europarl-v0-loglikelihood_rolling

-e67d3dbccd47d308bfc5b0e66b76d0dfc5e386ebfa94e056562c2281c395543f
+e67d3dbccd47d308bfc5b0e66b76d0dfc5e386ebfa94e056562c2281c395543f
\ No newline at end of file

tests/testdata/pile_europarl-v0-res.json

-{"results": {"pile_europarl": {"bits_per_byte": 8.648858203555344e-06, "byte_perplexity": 1.000008648895605, "word_perplexity": 1.000063506523818}}, "versions": {"pile_europarl": 0}}
+{"results": {"pile_europarl": {"bits_per_byte": 8.648858203555344e-06, "byte_perplexity": 1.000008648895605, "word_perplexity": 1.000063506523818}}, "versions": {"pile_europarl": 0}}
\ No newline at end of file

tests/testdata/pile_europarl-v1-loglikelihood_rolling

-e67d3dbccd47d308bfc5b0e66b76d0dfc5e386ebfa94e056562c2281c395543f
+e67d3dbccd47d308bfc5b0e66b76d0dfc5e386ebfa94e056562c2281c395543f
\ No newline at end of file

tests/testdata/pile_europarl-v1-res.json

-{"results": {"pile_europarl": {"bits_per_byte": 1.2477664839621123e-05, "byte_perplexity": 1.000008648895605, "word_perplexity": 1.000063506523818}}, "versions": {"pile_europarl": 1}}
+{"results": {"pile_europarl": {"bits_per_byte": 1.2477664839621123e-05, "byte_perplexity": 1.000008648895605, "word_perplexity": 1.000063506523818}}, "versions": {"pile_europarl": 1}}
\ No newline at end of file

tests/testdata/pile_freelaw-v0-loglikelihood_rolling

-d77f3f68aadd6cbf1290c2f6737b2ed5d5c2a60e4c81a65c280f207783caabe1
+d77f3f68aadd6cbf1290c2f6737b2ed5d5c2a60e4c81a65c280f207783caabe1
\ No newline at end of file

tests/testdata/pile_freelaw-v0-res.json

-{"results": {"pile_freelaw": {"bits_per_byte": 3.16238943008513e-05, "byte_perplexity": 1.0000316243943415, "word_perplexity": 1.000203169094218}}, "versions": {"pile_freelaw": 0}}
+{"results": {"pile_freelaw": {"bits_per_byte": 3.16238943008513e-05, "byte_perplexity": 1.0000316243943415, "word_perplexity": 1.000203169094218}}, "versions": {"pile_freelaw": 0}}
\ No newline at end of file

tests/testdata/pile_freelaw-v1-loglikelihood_rolling

-d77f3f68aadd6cbf1290c2f6737b2ed5d5c2a60e4c81a65c280f207783caabe1
+d77f3f68aadd6cbf1290c2f6737b2ed5d5c2a60e4c81a65c280f207783caabe1
\ No newline at end of file