Dead code checking for `CFE_ES_RunStatus_SYS_EXCEPTION` and `NULL` `bufptr`

[thnkslprpt]

Checklist

• I reviewed the Contributing Guide.
• I performed a cursory search to see if the bug report is relevant, not redundant, nor in conflict with other tickets.

Describe the bug
There are a couple of minor sections of dead/unnecessary code in CS.

Code snips

1. bufptr cannot be NULL (this is guaranteed by CFE_SB_ReceiveBuffer if the return value is CFE_SUCCESS):
   

   CS/fsw/src/cs_app.c

   Lines 86 to 91 in f958cc0

   	Result = CFE_SB_ReceiveBuffer(&BufPtr, CS_AppData.CmdPipe, CS_WAKEUP_TIMEOUT);
   	/* Performance Log (start time counter) */
   	CFE_ES_PerfLogEntry(CS_APPMAIN_PERF_ID);
   	if ((Result == CFE_SUCCESS) && (BufPtr != NULL))

2. Apparently code was removed that set the run status to CFE_ES_RunStatus_SYS_EXCEPTION, but this check was left in:
   

   CS/fsw/src/cs_app.c

   Line 119 in f958cc0

   if (CS_AppData.RunStatus == CFE_ES_RunStatus_APP_ERROR || CS_AppData.RunStatus == CFE_ES_RunStatus_SYS_EXCEPTION)

Expected behavior
Remove dead code to reduce unnecessary clutter.

Reporter Info
Avi Weiss   @thnkslprpt