CS Has Unreachable Code and Branches

[skliper]

CS has several unreachable lines of code and branch conditions.

Unreachable code and branch in CS_AppMain lines 280 - 287:
CS_CreateRestoreStatesFromCDS always returns CFE_SUCCESS.

Unreachable branch in cs_utils.c:CS_BackgroundEeprom line 709:
CurrentEntryInTable is always CS_MAX_NUM_EEPROM_TABLE_ENTRIES when CS_FindEnabledEepromEntry returns false.

Unreachable branches in cs_utils.c:CS_HandleRoutineTableUpdates lines 1037, 1061, 1086:
ErrorCode is always CFE_SUCCESS due to initialization.

Imported from GSFCCFS-1730