remove xlsx

[cjw296]

No description provided.

[codecov]

Codecov Report

Merging #371 (d2ffb3e) into master (d470bc9) will decrease coverage by 3.00%.
The diff coverage is 98.27%.

@@            Coverage Diff             @@
##           master     #371      +/-   ##
==========================================
- Coverage   59.30%   56.30%   -3.01%     
==========================================
  Files          26       23       -3     
  Lines        6303     5476     -827     
==========================================
- Hits         3738     3083     -655     
+ Misses       2565     2393     -172     

Impacted Files	Coverage Δ
xlrd/book.py	64.43% <87.50%> (+1.27%)	⬆️
tests/helpers.py	100.00% <100.00%> (ø)
tests/test_cell.py	100.00% <100.00%> (ø)
tests/test_formats.py	100.00% <100.00%> (ø)
tests/test_formulas.py	100.00% <100.00%> (ø)
tests/test_ignore_workbook_corruption_error.py	100.00% <100.00%> (ø)
tests/test_inspect.py	100.00% <100.00%> (ø)
tests/test_missing_records.py	100.00% <100.00%> (ø)
tests/test_open_workbook.py	100.00% <100.00%> (ø)
tests/test_sheet.py	100.00% <100.00%> (ø)
... and 6 more

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