Remove Tutorials section whose content can be found on the wiki

src/docs/chapter/user/YZ_Tutorials/00_section_header.adoc

...ocs/chapter/user/YZ_Tutorials/Tutorial_Co-Simulation.adoc

...ial_Debugging_Well-Definedness_and_Transition_Errors.adoc

...chapter/user/YZ_Tutorials/Tutorial_Enabling_Analysis.adoc

.../user/YZ_Tutorials/Tutorial_LTL_Counter-example_View.adoc

...ocs/chapter/user/YZ_Tutorials/Tutorial_ProB_Java_API.adoc

...user/YZ_Tutorials/Tutorial_Troubleshooting_the_Setup.adoc

...ials/Tutorial_Understanding_ProB's_Constraint_Solver.adoc

...er/user/YZ_Tutorials/Tutorial_Unit_Plugin_With_Rodin.adoc

src/docs/chapter/user/YZ_Tutorials/ZZ_section_footer.adoc