fix #81: removed tex=True setting

[maximelucas]

Fixed #81 by removing line 15 mpl.rcParams["text.usetex"] = True

[catanzaromj]

@maximelucas Thanks for this! Would you mind fixing the failing tests too? Can you switch out the older np.Inf calls to np.inf to fix these tests?

FAILED test/test_persistence_imager.py::test_fit_diagram - AttributeError: `np.Inf` was removed in the NumPy 2.0 release. Use `np.inf` instead.
FAILED test/test_persistence_imager.py::test_fit_diagram_list - AttributeError: `np.Inf` was removed in the NumPy 2.0 release. Use `np.inf` instead.
FAILED test/test_persistence_imager.py::TestTransformOutput::test_n_pixels - AttributeError: `np.Inf` was removed in the NumPy 2.0 release. Use `np.inf` instead.
FAILED test/test_persistence_imager.py::TestTransformOutput::test_multiple_diagrams - AttributeError: `np.Inf` was removed in the NumPy 2.0 release. Use `np.inf` instead.

To be clear, these lines need to be fixed.

Thanks

[maximelucas]

Done. I think that's due to the newest version of numpy, 2.0. You may want to put a ceiling on the allowed version in the requirements if other problems pop up.

[catanzaromj]

Awesome, thanks!