Remove pprint_as_string from optimization

[Cryoris]

Summary

The pprint_as_string method will be removed from the optimization module.

Details and comments

[molar-volume]

in this tutorial, we can also change all
print(mod.export_as_lp_string()) ---> print(mod)

can I do it?

[molar-volume]

@Cryoris the method print_as_lp_string() does not work on docplex.mp.model or QuadraticProgram, although I did not remove it

I would skip the whole line
"You can display your optimization problem e.g. with the print_as_lp_string method."

[Cryoris]

@molar-volume nice to see you're motivated! But we cannot use print() yet because the tutorials should work with the latest official release (the current stable branch on GitHub) and the print() method was only added recently to master.

Good catch with the print_as_lp_string, I removed that line.

[Cryoris]

The build fails due to a cell timeout, but all cells run in a few seconds. @nonhermitian do you know what's going on here?

[nonhermitian]

Yes: #925

[nonhermitian]

The file was run using an odd kernel name (seen this before from the optimization notebooks):

No such kernel named python37564bitlatestvirtualenv76cfe9d7d3f749489cf2ff69593234af

The kernel name should be python3.

[Cryoris]

Got it, thanks!

[nonhermitian]

Thanks for this.