[bootloader] Fix schema file for config

A stray "machineid" was added, without a type definition,
so the config file -- which doesn't mention machineid at all
-- was considered invalid. Drop it because the key isn't mentioned
anywhere else.

src/modules/bootloader/bootloader.schema.yaml

@@ -1,39 +1,31 @@
 #SPDX - FileCopyrightText : 2020 Adriaan de Groot < groot @kde.org>
 #SPDX - License - Identifier : GPL - 3.0 - or -later
----
-$schema: https://json-schema.org/schema#
+-- -$schema : https :  //json-schema.org/schema#
                        $id : https :  //calamares.io/schemas/bootloader
-additionalProperties: false
-type: object
-properties:
-    efiBootLoader: { type: string }
-    kernelSearchPath:  { type: string }
-    kernelName:  { type: string }
-    timeout:  { type: string }  # Inserted verbatim
-    additionalInitrdFiles:
-        type: array
-        items:
-            type: string
-    bootloaderEntryName:  { type: string }
-    kernelLine:  { type: string }
-    fallbackKernelLine:  { type: string }
+                                      additionalProperties : false type : object properties : efiBootLoader
+    : { type : string } kernelSearchPath : { type : string } kernelName : { type : string } timeout:
+{
+type:
+    string
+}
+#Inserted verbatim additionalInitrdFiles : type : array items : type : string bootloaderEntryName : {
+    type : string } kernelLine : { type : string } fallbackKernelLine:
+{
+type:
+    string
+}
 
 #Programs
-    grubInstall:  { type: string }
-    grubMkconfig:  { type: string }
-    grubCfg:  { type: string }
-    grubProbe: { type: string }
-    efiBootMgr: { type: string }
+grubInstall : { type : string } grubMkconfig : { type : string } grubCfg : { type : string } grubProbe
+    : { type : string } efiBootMgr : { type : string }
 
-    efiBootloaderId:  { type: string }
-    installEFIFallback: { type: boolean }
+                                     efiBootloaderId : { type : string } installEFIFallback : { type : boolean }
 
-required:
-    - efiBootLoader
+                                                                                              required
+    : -efiBootLoader
       - kernelSearchPath
       - kernelName
       - grubInstall
       - grubMkconfig
       - grubCfg
       - grubProbe
-    - machineid