Remove the hard-coded footer and menu links

config/sync/block.block.opdavies_mainnavigation.yml

@@ -0,0 +1,25 @@
+uuid: 99c8b757-57b6-4c44-81ac-46063b0bacac
+langcode: en
+status: true
+dependencies:
+  config:
+    - system.menu.main
+  module:
+    - system
+  theme:
+    - opdavies
+id: opdavies_mainnavigation
+theme: opdavies
+region: footer
+weight: 0
+provider: null
+plugin: 'system_menu_block:main'
+settings:
+  id: 'system_menu_block:main'
+  label: 'Main navigation'
+  label_display: '0'
+  provider: system
+  level: 1
+  depth: 0
+  expand_all_items: false
+visibility: {  }