Code Cleanup: Reviewing Redundancies in AP_OSD_MSP

[lida2003]

It appears that the AP_OSD_MSP module does not implement any specific functionality and may be redundant. If this section of the code is indeed unnecessary, it could be considered for cleanup to streamline the codebase and reduce maintenance overhead. A thorough review is recommended to confirm whether any dependencies exist before proceeding with its removal.

https://github.com/ArduPilot/ardupilot/blob/master/libraries/AP_OSD/AP_OSD_MSP.h

I think the feature has been implemented by code below:

ardupilot/libraries/AP_OSD/AP_OSD_MSP_DisplayPort.cpp

Line 111 in 9fb1e2b

if (msp && msp->is_option_enabled(AP_MSP::Option::DISPLAYPORT_BTFL_SYMBOLS)) {