[android][ios] Remove controversial Kayak integration

This patch removes the "Photos, reviews, booking" referral link displayed for certain hotels.

Apologies to all users who experienced moral distress due to this integration. Thanks to everyone
who spoke up. It should’ve been removed a year ago. Let's close this chapter. Better late than
never. Zap it! Sorry again.

Relevant discussions:

- https://github.com/organicmaps/organicmaps/pull/6523
- https://gitlab.com/fdroid/fdroiddata/-/merge_requests/14082

Commits reverted:

51b3fc99 Add "Details on ..." button to hotels
eee51c1b Rename "More on KAYAK"
2f1b6ce0 Add a setting to display Kayak links

Signed-off-by: Roman Tsisyk <roman@tsisyk.com>

android/app/src/main/java/app/organicmaps/widget/placepage/sections/PlacePageLinksFragment.java

@@ -14,12 +14,9 @@ import androidx.lifecycle.Observer;
 import androidx.lifecycle.ViewModelProvider;
 
 import app.organicmaps.Framework;
-import app.organicmaps.MwmActivity;
 import app.organicmaps.R;
 import app.organicmaps.bookmarks.data.MapObject;
 import app.organicmaps.bookmarks.data.Metadata;
-import app.organicmaps.util.Config;
-import app.organicmaps.util.UiUtils;
 import app.organicmaps.util.Utils;
 import app.organicmaps.widget.placepage.PlacePageUtils;
 import app.organicmaps.widget.placepage.PlacePageViewModel;

coding/url.cpp

@@ -113,30 +113,6 @@ string Join(string const & lhs, string const & rhs)
   return lhs + rhs;
 }
 
-string Slug(string const & raw)
-{
-  size_t const count = raw.size();
-  string result;
-  result.reserve(count);
-
-  for (size_t i = 0; i < count; ++i)
-  {
-    char const c = raw[i];
-    if (c < '-' || c == '/' || (c > '9' && c < 'A') || (c > 'Z' && c < '_') ||
-        c == '`' || (c > 'z' && c < '~') || c > '~')
-    {
-      // No more than two dashes in a row.
-      size_t sz = result.length();
-      if (sz < 2 || result[sz - 2] != '-' || result[sz - 1] != '-')
-        result += '-';
-    }
-    else
-      result += raw[i];
-  }
-
-  return result;
-}
-
 string UrlEncode(string const & rawUrl)
 {
   size_t const count = rawUrl.size();

coding/url.hpp

@@ -57,9 +57,6 @@ std::string Join(std::string const & lhs, std::string const & rhs, Args &&... ar
   return Join(Join(lhs, rhs), std::forward<Args>(args)...);
 }
 
-// Replaces all special characters with '-'
-std::string Slug(std::string const & raw);
-
 std::string UrlEncode(std::string const & rawUrl);
 std::string UrlDecode(std::string_view encodedUrl);
 

indexer/map_object.hpp

@@ -58,6 +58,7 @@ public:
       case MetadataID::FMD_CUSTOM_IDS:
       case MetadataID::FMD_PRICE_RATES:
       case MetadataID::FMD_RATINGS:
+      case MetadataID::FMD_EXTERNAL_URI:
         break;
       default: fn(id, value); break;
       }

iphone/CoreApi/CoreApi/PlacePageData/Common/PlacePageInfoData.mm

@@ -62,7 +62,6 @@ NSString * GetLocalizedMetadataValueString(MapObject::MetadataID metaID, std::st
           break;
         }
         case MetadataID::FMD_WEBSITE: _website = ToNSString(value); break;
-        case MetadataID::FMD_EXTERNAL_URI: break;
         case MetadataID::FMD_WIKIPEDIA: _wikipedia = ToNSString(value); break;
         case MetadataID::FMD_WIKIMEDIA_COMMONS: _wikimediaCommons = ToNSString(value); break;
         case MetadataID::FMD_EMAIL: