remove database auto purge methods

src/main/java/fr/xephi/authme/datasource/CacheDataSource.java

@@ -138,16 +138,6 @@ public class CacheDataSource implements DataSource {
         return result;
     }
 
-    @Override
-    public Set<String> autoPurgeDatabase(long until) {
-        Set<String> cleared = source.autoPurgeDatabase(until);
-        for (String name : cleared) {
-            cachedAuths.invalidate(name);
-        }
-
-        return cleared;
-    }
-
     @Override
     public Set<String> getRecordsToPurge(long until) {
         return source.getRecordsToPurge(until);

src/main/java/fr/xephi/authme/datasource/DataSource.java

@@ -69,15 +69,6 @@ public interface DataSource extends Reloadable {
      */
     boolean updatePassword(String user, HashedPassword password);
 
-    /**
-     * Purge all records in the database whose last login was longer ago than
-     * the given time if they do not have the bypass permission.
-     *
-     * @param until The minimum last login
-     * @return The account names that have been removed
-     */
-    Set<String> autoPurgeDatabase(long until);
-
     /**
      * Get all records in the database whose last login was before the given time.
      *

src/main/java/fr/xephi/authme/datasource/FlatFile.java

@@ -229,40 +229,6 @@ public class FlatFile implements DataSource {
         return true;
     }
 
-    @Override
-    public Set<String> autoPurgeDatabase(long until) {
-        BufferedReader br = null;
-        BufferedWriter bw = null;
-        ArrayList<String> lines = new ArrayList<>();
-        Set<String> cleared = new HashSet<>();
-        try {
-            br = new BufferedReader(new FileReader(source));
-            String line;
-            while ((line = br.readLine()) != null) {
-                String[] args = line.split(":");
-                if (args.length >= 4) {
-                    if (Long.parseLong(args[3]) >= until) {
-                        lines.add(line);
-                        continue;
-                    }
-                }
-                cleared.add(args[0]);
-            }
-            bw = new BufferedWriter(new FileWriter(source));
-            for (String l : lines) {
-                bw.write(l + "\n");
-            }
-        } catch (IOException ex) {
-            ConsoleLogger.showError(ex.getMessage());
-            return cleared;
-        } finally {
-            silentClose(br);
-            silentClose(bw);
-        }
-
-        return cleared;
-    }
-
     @Override
     public Set<String> getRecordsToPurge(long until) {
         BufferedReader br = null;

src/main/java/fr/xephi/authme/datasource/MySQL.java

@@ -612,29 +612,6 @@ public class MySQL implements DataSource {
         return false;
     }
 
-    @Override
-    public Set<String> autoPurgeDatabase(long until) {
-        Set<String> list = new HashSet<>();
-        String select = "SELECT " + col.NAME + " FROM " + tableName + " WHERE " + col.LAST_LOGIN + "<?;";
-        String delete = "DELETE FROM " + tableName + " WHERE " + col.LAST_LOGIN + "<?;";
-        try (Connection con = getConnection();
-             PreparedStatement selectPst = con.prepareStatement(select);
-             PreparedStatement deletePst = con.prepareStatement(delete)) {
-            selectPst.setLong(1, until);
-            try (ResultSet rs = selectPst.executeQuery()) {
-                while (rs.next()) {
-                    list.add(rs.getString(col.NAME));
-                }
-            }
-            deletePst.setLong(1, until);
-            deletePst.executeUpdate();
-        } catch (SQLException ex) {
-            logSqlException(ex);
-        }
-
-        return list;
-    }
-
     @Override
     public Set<String> getRecordsToPurge(long until) {
         Set<String> list = new HashSet<>();

src/main/java/fr/xephi/authme/datasource/SQLite.java

@@ -292,28 +292,6 @@ public class SQLite implements DataSource {
         return false;
     }
 
-    @Override
-    public Set<String> autoPurgeDatabase(long until) {
-        Set<String> list = new HashSet<>();
-        String select = "SELECT " + col.NAME + " FROM " + tableName + " WHERE " + col.LAST_LOGIN + "<?;";
-        String delete = "DELETE FROM " + tableName + " WHERE " + col.LAST_LOGIN + "<?;";
-        try (PreparedStatement selectPst = con.prepareStatement(select);
-             PreparedStatement deletePst = con.prepareStatement(delete)) {
-            selectPst.setLong(1, until);
-            try (ResultSet rs = selectPst.executeQuery()) {
-                while (rs.next()) {
-                    list.add(rs.getString(col.NAME));
-                }
-            }
-            deletePst.setLong(1, until);
-            deletePst.executeUpdate();
-        } catch (SQLException ex) {
-            logSqlException(ex);
-        }
-
-        return list;
-    }
-
     @Override
     public Set<String> getRecordsToPurge(long until) {
         Set<String> list = new HashSet<>();