Permit Cython 3.1.0 for Python 3.13

[ndgrigorian]

This PR removes logic which limits Cython 3.1.0 for Python 3.13

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[github-actions]

Deleted rendered PR docs from intelpython.github.com/dpctl, latest should be updated shortly. 🤞

[github-actions]

Array API standard conformance tests for dpctl=0.21.0dev0=py310h93fe807_54 ran successfully.
Passed: 1116
Failed: 5
Skipped: 119

[coveralls]

coverage: 85.902% (+0.005%) from 85.897%
when pulling 6a4eea7 on permit-cython-3.1.0
into b4e0dca on master.

[github-actions]

Array API standard conformance tests for dpctl=0.21.0dev0=py310h93fe807_78 ran successfully.
Passed: 1115
Failed: 6
Skipped: 119

[github-actions]

Array API standard conformance tests for dpctl=0.21.0dev0=py310h93fe807_95 ran successfully.
Passed: 1114
Failed: 7
Skipped: 119

[github-actions]

Array API standard conformance tests for dpctl=0.21.0dev0=py310h93fe807_95 ran successfully.
Passed: 1114
Failed: 7
Skipped: 119

[antonwolfy]

Thank you @ndgrigorian

[github-actions]

Array API standard conformance tests for dpctl=0.21.0dev0=py310h93fe807_107 ran successfully.
Passed: 1114
Failed: 7
Skipped: 119