Remove source/target masks

[michalk8]

No description provided.

[marcocuturi]

LGTM!

[codecov]

Codecov Report

Attention: Patch coverage is 79.01235% with 17 lines in your changes missing coverage. Please review.

Project coverage is 87.91%. Comparing base (04e5abb) to head (4a89427).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/ott/geometry/geometry.py	73.52%	5 Missing and 4 partials ⚠️
src/ott/geometry/low_rank.py	66.66%	2 Missing and 1 partial ⚠️
src/ott/geometry/pointcloud.py	87.50%	2 Missing and 1 partial ⚠️
src/ott/utils.py	50.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #603      +/-   ##
==========================================
- Coverage   88.15%   87.91%   -0.24%     
==========================================
  Files          74       74              
  Lines        7753     7657      -96     
  Branches      542      533       -9     
==========================================
- Hits         6835     6732     -103     
- Misses        777      783       +6     
- Partials      141      142       +1     

Files with missing lines	Coverage Δ
src/ott/geometry/grid.py	96.21% <ø> (-0.06%)	⬇️
src/ott/problems/quadratic/gw_barycenter.py	89.81% <100.00%> (-0.19%)	⬇️
src/ott/solvers/linear/continuous_barycenter.py	94.11% <ø> (ø)
src/ott/solvers/quadratic/gw_barycenter.py	93.20% <100.00%> (ø)
src/ott/tools/k_means.py	96.25% <100.00%> (ø)
src/ott/tools/segment_sinkhorn.py	100.00% <ø> (ø)
src/ott/tools/sinkhorn_divergence.py	94.18% <ø> (-0.14%)	⬇️
src/ott/utils.py	96.22% <50.00%> (-1.20%)	⬇️
src/ott/geometry/low_rank.py	95.70% <66.66%> (-1.04%)	⬇️
src/ott/geometry/pointcloud.py	96.50% <87.50%> (+1.06%)	⬆️
... and 1 more