Remove redundant method

classes/db_util.php

@@ -108,13 +108,15 @@ abstract class DB_Util {
 	}
 
 	/**
-	 * Get database-specific sql to drop a table
+	 * Drop the selected table
 	 *
-	 * @abstract
 	 * @param string $name
 	 * @return string
 	 */
-	abstract public function delete_table($name);
+	public function delete_table($name)
+	{
+		return 'DROP TABLE "'.$name.'"';
+	}
 
 	/**
 	 * Return an SQL file with the database table structure

drivers/firebird/firebird_util.php

@@ -24,19 +24,6 @@
  */
 class Firebird_Util extends DB_Util {
 
-	/**
-	 * Drop the selected table
-	 *
-	 * @param string $name
-	 * @return string
-	 */
-	public function delete_table($name)
-	{
-		return 'DROP TABLE "'.$name.'"';
-	}
-
-	// --------------------------------------------------------------------------
-
 	/**
 	 * Create an SQL backup file for the current database's structure
 	 *

drivers/pgsql/pgsql_util.php

@@ -23,19 +23,6 @@
  */
 class PgSQL_Util extends DB_Util {
 
-	/**
-	 * Database-specific SQL for dropping a table
-	 *
-	 * @param string $name
-	 * @return string
-	 */
-	public function delete_table($name)
-	{
-		return 'DROP TABLE "'.$name.'"';
-	}
-
-	// --------------------------------------------------------------------------
-
 	/**
 	 * Create an SQL backup file for the current database's structure
 	 *