Remove unused language keys

src/languages/en.js

@@ -15,17 +15,12 @@ export default {
     "Affected Monitors": "Affected Monitors",
     "Pick Affected Monitors...": "Pick Affected Monitors...",
     "Start of maintenance": "Start of maintenance",
-    "Expected end of maintenance": "Expected end of maintenance",
     "All Status Pages": "All Status Pages",
-    "Selected status pages": "Selected status pages",
     "Select status pages...": "Select status pages...",
     recurringIntervalMessage: "Run once every day | Run once every {0} days",
     affectedMonitorsDescription: "Select monitors that are affected by current maintenance",
     affectedStatusPages: "Show this maintenance message on selected status pages",
     atLeastOneMonitor: "Select at least one affected monitor",
-    selectedStatusPagesDescription: "Select status pages to display maintenance info on",
-    maintenanceTitleExample: "Network infrastructure maintenance",
-    maintenanceDescriptionExample: "Example: Network infrastructure maintenance is underway which will affect some of our services.",
     passwordNotMatchMsg: "The repeat password does not match.",
     notificationDescription: "Notifications must be assigned to a monitor to function.",
     keywordDescription: "Search keyword in plain HTML or JSON response. The search is case-sensitive.",
@@ -136,7 +131,6 @@ export default {
     "Remember me": "Remember me",
     Login: "Login",
     "No Monitors, please": "No Monitors, please",
-    "No Maintenance, please": "No Maintenance, please",
     "add one": "add one",
     "Notification Type": "Notification Type",
     Email: "Email",