Deactivate codecov patch (with patch: off)

[mwouts]

This is another attempt to fix #639

[codecov]

Codecov Report

Merging #640 into master will increase coverage by 0.00%.
The diff coverage is 98.91%.

@@           Coverage Diff           @@
##           master     #640   +/-   ##
=======================================
  Coverage   99.18%   99.18%           
=======================================
  Files          94       94           
  Lines        9307     9359   +52     
=======================================
+ Hits         9231     9283   +52     
  Misses         76       76           

Impacted Files	Coverage Δ
tests/test_trust_notebook.py	98.98% <94.73%> (-1.02%)	⬇️
jupytext/contentsmanager.py	98.51% <98.07%> (+0.06%)	⬆️
tests/test_cli.py	100.00% <100.00%> (ø)
tests/test_cm_config.py	100.00% <100.00%> (ø)
tests/test_contentsmanager.py	100.00% <100.00%> (ø)
tests/test_escape_magics.py	100.00% <100.00%> (ø)
tests/test_read_simple_percent.py	100.00% <100.00%> (ø)
tests/test_save_multiple.py	100.00% <100.00%> (ø)
tests/utils.py	100.00% <100.00%> (ø)
jupytext/config.py	97.51% <0.00%> (+0.62%)	⬆️

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