Remove the redundant Simulink telemetry in rotator. This ticket will need to modify the Simulink model, low-level controller code, and EUI.

1. Remove "Rotator_Fb"
2. Remove "ChA_LinearEncoder" and "ChB_LinearEncoder". This item does not need to remove in the Simulink model, which will use them in the calculation.
3. Update the Python script in EUI for "MJD" and "MJDFrac".