Drop support for SQL Anywhere <16

lib/Doctrine/DBAL/Platforms/Keywords/SQLAnywhere11Keywords.php

-<?php
-
-namespace Doctrine\DBAL\Platforms\Keywords;
-
-use function array_diff;
-use function array_merge;
-
-/**
- * SAP Sybase SQL Anywhere 11 reserved keywords list.
- */
-class SQLAnywhere11Keywords extends SQLAnywhereKeywords
-{
-    /**
-     * {@inheritdoc}
-     */
-    public function getName()
-    {
-        return 'SQLAnywhere11';
-    }
-
-    /**
-     * {@inheritdoc}
-     *
-     * @link http://dcx.sybase.com/1100/en/dbreference_en11/alhakeywords.html
-     */
-    protected function getKeywords()
-    {
-        return array_merge(
-            array_diff(
-                parent::getKeywords(),
-                ['IQ']
-            ),
-            [
-                'MERGE',
-                'OPENSTRING',
-            ]
-        );
-    }
-}

lib/Doctrine/DBAL/Platforms/Keywords/SQLAnywhere12Keywords.php

-<?php
-
-namespace Doctrine\DBAL\Platforms\Keywords;
-
-use function array_diff;
-use function array_merge;
-
-/**
- * SAP Sybase SQL Anywhere 12 reserved keywords list.
- */
-class SQLAnywhere12Keywords extends SQLAnywhere11Keywords
-{
-    /**
-     * {@inheritdoc}
-     */
-    public function getName()
-    {
-        return 'SQLAnywhere12';
-    }
-
-    /**
-     * {@inheritdoc}
-     *
-     * @link http://dcx.sybase.com/1200/en/dbreference/alhakeywords.html
-     */
-    protected function getKeywords()
-    {
-        return array_merge(
-            array_diff(
-                parent::getKeywords(),
-                [
-                    'INDEX_LPAREN',
-                    'SYNTAX_ERROR',
-                    'WITH_CUBE',
-                    'WITH_LPAREN',
-                    'WITH_ROLLUP',
-                ]
-            ),
-            [
-                'DATETIMEOFFSET',
-                'LIMIT',
-                'OPENXML',
-                'SPATIAL',
-                'TREAT',
-            ]
-        );
-    }
-}

lib/Doctrine/DBAL/Platforms/Keywords/SQLAnywhere16Keywords.php

-<?php
-
-namespace Doctrine\DBAL\Platforms\Keywords;
-
-use function array_merge;
-
-/**
- * SAP Sybase SQL Anywhere 16 reserved keywords list.
- */
-class SQLAnywhere16Keywords extends SQLAnywhere12Keywords
-{
-    /**
-     * {@inheritdoc}
-     */
-    public function getName()
-    {
-        return 'SQLAnywhere16';
-    }
-
-    /**
-     * {@inheritdoc}
-     *
-     * @link http://dcx.sybase.com/index.html#sa160/en/dbreference/alhakeywords.html
-     */
-    protected function getKeywords()
-    {
-        return array_merge(
-            parent::getKeywords(),
-            [
-                'ARRAY',
-                'JSON',
-                'ROW',
-                'ROWTYPE',
-                'UNNEST',
-                'VARRAY',
-            ]
-        );
-    }
-}