rtd: test don't use %matplotlib inline

[mathause]

Sometimes rtd times out in the first cell of the method.ipynb notebook, which does:

%matplotlib inline

from matplotlib import rcParams

rcParams["figure.dpi"] = 300
rcParams["font.size"] = 8

import warnings

warnings.filterwarnings("ignore")

I'll to see if not having %matplotlib inline is faster. But as this is flaky behavior, we will probably not find out right now...

[codecov]

Codecov Report

Merging #495 (2f9d8e5) into main (b4f87d8) will decrease coverage by 0.16%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #495      +/-   ##
==========================================
- Coverage   98.79%   98.64%   -0.16%     
==========================================
  Files          17       17              
  Lines        1330     1330              
==========================================
- Hits         1314     1312       -2     
- Misses         16       18       +2     

Flag	Coverage Δ
bare-minimum	?
min-all-deps	96.53% <ø> (ø)
shapely_lt_2	95.18% <ø> (ø)
unittests	98.64% <ø> (-0.16%)	⬇️

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see 1 file with indirect coverage changes