Revert "call maybe_do_init_side when the engine starts a sides turn"

This reverts commit 77ead906927bec69d9136d349d637458f7a553f0.

After the refactor which removed unnecessary arguments of functions,
and clarified that the value "save" is actually "do_autosaves_"...
this addition looks more obviously like an error. For one thing,
it is passing the do_autosaves_ bool parameter to maybe_do_init_sides,
which expects that the first parameter indicated whether we are
coming from the replay code path or not (!). So if this was working,
it was probably lucky.

Conflicts:
	src/playsingle_controller.cpp