Remove unused translation keys

public/locales/en.json

@@ -430,8 +430,6 @@
       "password": "Password",
       "placeholder": "Placeholder",
       "previous": "Previous",
-      "profile_one": "Profile",
-      "profile_other": "Profiles",
       "right": "Right",
       "share": "Share",
       "sort": "Sort",
@@ -871,7 +869,6 @@
         "offset_spread_pages": "Toggle offset spread pages",
         "previous_chapter": "Previous chapter",
         "previous_page": "Previous page",
-        "profiles": "Cycle profiles",
         "scale_type": "Cycle image scale type",
         "scroll_backward": "Scroll backward",
         "scroll_forward": "Scroll forward",
@@ -904,10 +901,6 @@
         "title": "Scale type",
         "width": "Fit width"
       },
-      "profiles": {
-        "description": "Profiles are used to define the default reader settings which then can be used for series and reading modes",
-        "placeholder": "Comics | length: 16, chars: letters, numbers, -, _"
-      },
       "progress_bar": {
         "position": "Progress bar position",
         "size": "Progress bar size",