remove extra slots

src/components/palette_editor/palette_editor.vue

@@ -75,17 +75,7 @@ const paletteKeys = [
   'cBlue',
   'cGreen',
   'cOrange',
-  'wallpaper',
-  'extra1',
-  'extra2',
-  'extra3',
-  'extra4',
-  'extra5',
-  'extra6',
-  'extra7',
-  'extra8',
-  'extra9',
-  'extra10'
+  'wallpaper'
 ]
 
 const fallback = (key) => {

src/i18n/en.json

@@ -771,16 +771,6 @@
           "cGreen": "Green color",
           "cOrange": "Orange color",
           "wallpaper": "Wallpaper",
-          "extra1": "Extra 1",
-          "extra2": "Extra 2",
-          "extra3": "Extra 3",
-          "extra4": "Extra 4",
-          "extra5": "Extra 5",
-          "extra6": "Extra 6",
-          "extra7": "Extra 7",
-          "extra8": "Extra 8",
-          "extra9": "Extra 9",
-          "extra10": "Extra 10",
           "v2_unsupported": "Older v2 themes don't support palettes. Switch to v3 theme to make use of palettes"
         },
         "editor": {