Re-enabled simposix SDCard support, and removed obsolete SDCard alarm usage from System module

flight/Modules/System/systemmod.c

@@ -463,15 +463,6 @@ static void updateSystemAlarms()
 		AlarmsClear(SYSTEMALARMS_ALARM_STACKOVERFLOW);
 	}
 
-#if defined(PIOS_INCLUDE_SDCARD)
-	// Check for SD card
-	if (PIOS_SDCARD_IsMounted() == 0) {
-		AlarmsSet(SYSTEMALARMS_ALARM_SDCARD, SYSTEMALARMS_ALARM_ERROR);
-	} else {
-		AlarmsClear(SYSTEMALARMS_ALARM_SDCARD);
-	}
-#endif
-
 	// Check for event errors
 	UAVObjGetStats(&objStats);
 	EventGetStats(&evStats);

flight/SimPosix/System/inc/pios_config.h

@@ -44,6 +44,7 @@
 //#define PIOS_INCLUDE_I2C
 #define PIOS_INCLUDE_IRQ
 #define PIOS_INCLUDE_LED
+#define PIOS_INCLUDE_SDCARD
 //#define PIOS_INCLUDE_IAP
 #define PIOS_INCLUDE_SERVO
 #define PIOS_INCLUDE_SPI

ground/openpilotgcs/share/openpilotgcs/diagrams/default/system-health.svg

@@ -1385,26 +1385,6 @@
        id="Telemetry-Critical"
        style="fill:#cf0e0e;fill-opacity:1;stroke:#ffffff;stroke-width:0.29055119;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none;display:inline" />
   </g>
-  <g
-     style="display:inline"
-     inkscape:label="SDCard-OK"
-     id="layer1"
-     inkscape:groupmode="layer" />
-  <g
-     style="display:inline"
-     inkscape:label="SDCard-Warning"
-     id="layer6"
-     inkscape:groupmode="layer" />
-  <g
-     style="display:inline"
-     inkscape:label="SDCard-Error"
-     id="layer11"
-     inkscape:groupmode="layer" />
-  <g
-     style="display:inline"
-     inkscape:label="SDCard-Critical"
-     id="layer20"
-     inkscape:groupmode="layer" />
   <g
      style="display:none"
      inkscape:label="Memory-OK"