Issue 4783 - Drop Safari support [adblockplusui]

locale/en-US/firstRun.json

 {
   "firstRun_acceptableAdsExplanation": {
     "message": "We'd like to encourage websites to use straightforward, unobtrusive advertising. That's why we've established <a>strict guidelines</a> to identify acceptable ads, which are shown under default settings. If you still want to block every ad you can <a>disable</a> this in a few seconds."
   },
   "firstRun_acceptableAdsHeadline": {
     "message": "Annoying ads will now be blocked"
   },
   "firstRun_abbPromotionHeadline": {
     "message": "Got a smartphone or a tablet?"
   },
   "firstRun_abbButtonTitle": {
     "message": "Get Adblock Browser here"
   },
   "firstRun_abbButtonSubtitle": {
     "message": "Available for Android and iOS"
   },
   "firstRun_contributor_credits": {
     "message": "Contributor Credits"
   },
   "firstRun_donate": {
     "message": "donate"
   },
   "firstRun_donate_label": {
     "message": "Support our project"
   },
   "firstRun_filterlistsReinitializedWarning": {
     "message": "It seems that an issue caused all filters to be removed and we were unable to restore a backup. Therefore we had to reset your filters and Acceptable Ads settings. Please check your filter lists and Acceptable Ads settings in the <a>Adblock Plus options</a>."
   },
-  "firstRun_legacySafariWarning": {
-    "message": "You are using an old version of Safari which is not supported by Adblock Plus. It might not work correctly or impair the user experience on some websites. We strongly recommend to either update to Safari 6.1.1 or higher (on OS X 10.8 Mountain Lion), or Safari 7.0.1 or higher (on OS X 10.9 Mavericks), or to use the latest version of Mozilla Firefox, Google Chrome or Opera."
-  },
   "firstRun_share": {
     "message": "Tell your friends"
   },
   "firstRun_share_headline": {
     "message": "<a>Give us a hand</a> in making the web a better place"
   },
   "firstRun_title": {
     "message": "Adblock Plus has been installed"
   }
 }