Remove OwnCloud6 specific sharing code

If users encounter this situation, the share icon will simply not show.
This simplifies the transition to move this code in libsync.

src/gui/socketapi.cpp

@@ -679,17 +679,9 @@ SyncFileStatus SocketApi::fileStatus(Folder *folder, const QString& systemFileNa
         }
     }
 
-    if (rec.isValid()) {
-        if (rec._remotePerm.isNull()) {
-            // probably owncloud 6, that does not have permissions flag yet.
-            QString url = folder->remoteUrl().toString() + fileName;
-            if (url.contains( folder->accountState()->account()->davPath() + QLatin1String("Shared/") )) {
-                status.setSharedWithMe(true);
-            }
-        } else if (rec._remotePerm.contains("S")) {
-            status.setSharedWithMe(true);
-        }
-    }
+    if (rec.isValid() && rec._remotePerm.contains("S"))
+        status.setSharedWithMe(true);
+
     if (status.tag() == SyncFileStatus::STATUS_NEW) {
         // check the parent folder if it is shared and if it is allowed to create a file/dir within
         QDir d( fi.path() );