Cleanup the FSM base transitions

Description

This MR cleans up the following items in the FSM:

• Remove the non-working Reset transition. In RCMS runs, that transition is similar to a "Red Recycle", i.e. the destruction of all xDAQ executives and their re-instanciation;
• Remove the unused FSM test application;
• Various additional leftovers removal.

The gemexpert package is also removed since never developed and completely unused.

Related Issue

How Has This Been Tested?

Running smoothly on the GE1/1 integration setup.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.