Fix minor config error

mbed_app.json

@@ -56,7 +56,7 @@
             "platform.use-mpu"                         : false,
             "platform.default-serial-baud-rate"        : 115200,
             "mbed-bootloader.use-kvstore-rot"          : 0,
-            "target.restrict_size"                     : "0x8000",
+            "target.restrict_size"                     : "0x8000"
         },
         "NRF52840_DK": {
             "target.static_memory_defines"     : true,

mbed_lib.json

 {
     "name": "mbed-bootloader",
     "config": {
-        "application-start-address": {
-            "help": "Address to the beginning of the active application firmware in flash",
-            "required": true
-        },
-        "application-jump-address": {
-            "help": "Jump address for running the active application firmware (if different from application-start-address)"
-        },
         "max-application-size": {
             "help": "Maximum size of the active application",
             "value": "DEFAULT_MAX_APPLICATION_SIZE"