Delete one appearance of sage-python

[enriqueartal]

In #40490, sage-python has been replaced by python3 and one bin/sage-python has been erased, while other one is still there, erase it also.

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[dimpase]

#40490 removed sage-python. Just rename any remaining occurrence of the latter to python3.

[dimpase]

ok, it's actually not "called", it's just mentioned.

[tobiasdiez]

Thanks! (sagemath-enviroment should probably deleted completely, there is no point in installing parts of sagelib again)

[enriqueartal]

Thanks! (sagemath-enviroment should probably deleted completely, there is no point in installing parts of sagelib again)

I guess you are right, but for me now it is the only way that I can have a functional sirocco. In the time, just installing sirocco it worked, but now, the libraries are not installed without sagemath-sirocco (which needs sagemath-environment). I have struggled to have a solution without success (may because of lack of knowledge!)

[tobiasdiez]

With #39030 it should build the parts in sagelib relying on sirroco automatically, once you have that library installed.

[enriqueartal]

I would be happy to test, but I have no experience in using meson.