Remove support for dependencies compilation

[JasonMarechal25]

Should we keep the possibility to build dependencies in CMake projects ?
With or-tool being split from antares-deps how should we handle nested dependencies? Does it make sense to support at Xpansion level the choice to build Antares Simulator and the choice to build ortool?

In most cases developers can use assets from corresponding project releases. Building should never be a necessity for development. In case building a dependency is necessary it is always possible to clone the corresponding repository and build it, for debugging purpose for example.

If it is decided to remove such option another discussion should be held to know if we keep building dependencies during CI for release or if we trust our dependencies releases.