qcacmn: Remove obsolete START and STOP SYS_MSG_IDs

The SYS_MSG_ID_MC_START and SYS_MSG_ID_MC_STOP message IDs are no
longer being used. so remove them.

Change-Id: I8d35a537ac2c2f7436b23033561e5d0ef09895df
CRs-Fixed: 2107075

scheduler/inc/scheduler_api.h

@@ -50,10 +50,8 @@
 #define SYS_MSG_COOKIE      0xFACE
 
 typedef enum {
-	SYS_MSG_ID_MC_START,
 	SYS_MSG_ID_MC_THR_PROBE,
 	SYS_MSG_ID_MC_TIMER,
-	SYS_MSG_ID_MC_STOP,
 	SYS_MSG_ID_FTM_RSP,
 	SYS_MSG_ID_QVIT,