PX4: removed attempt at formatting microSD

this never worked, and its a bad idea anyway

mk/PX4/ROMFS/init.d/rcS

@@ -34,29 +34,7 @@ then
     fi
 else
     set HAVE_MICROSD 0
-    echo "Trying format of microSD"
-    tone_alarm MBAGP
-    if mkfatfs /dev/mmcsd0
-    then
-        echo "microSD card formatted"
-            if mount -t vfat /dev/mmcsd0 /fs/microsd
-            then
-                echo "format succeeded"
-                set HAVE_MICROSD 1
-                if [ -f /etc/tones/startup ]
-                then
-                    tone_alarm /etc/tones/startup
-                else
-                    tone_alarm 1
-                fi
-            else
-                echo "mount failed"
-                tone_alarm MNBG
-            fi
-    else
-        echo "format failed"
-        tone_alarm MNBGG
-    fi
+    tone_alarm MNBGG
 fi
 
 # Look for an additional init script that allows changing the default