Removed some unused code bits

src/Driver/OCI8/OCI8Statement.php

@@ -42,13 +42,6 @@ class OCI8Statement implements Statement
     /** @var OCI8Connection */
     protected $_conn;
 
-    /**
-     * @deprecated
-     *
-     * @var string
-     */
-    protected static $_PARAM = ':param';
-
     /** @var string[] */
     protected $_paramMap = [];
 

src/Platforms/AbstractPlatform.php

@@ -2107,18 +2107,6 @@ abstract class AbstractPlatform
         ];
     }
 
-    /**
-     * Common code for alter table statement generation that updates the changed Index and Foreign Key definitions.
-     *
-     * @deprecated
-     *
-     * @return string[]
-     */
-    protected function _getAlterTableIndexForeignKeySQL(TableDiff $diff)
-    {
-        return array_merge($this->getPreAlterTableIndexForeignKeySQL($diff), $this->getPostAlterTableIndexForeignKeySQL($diff));
-    }
-
     /**
      * Gets declaration of a number of fields in bulk.
      *