diff --git a/.gitignore b/.gitignore
index a91841777..13f4debc8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,8 @@ lib/Doctrine/DBAL
 /.settings/
 .buildpath
 .project
+/.AppleDouble/
+/tests/.AppleDouble/
+/bin/.AppleDouble/
+/lib/.AppleDouble/
+/tools/.AppleDouble/
\ No newline at end of file
diff --git a/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php b/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php
index 8434e49b2..b086c1785 100644
--- a/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php
+++ b/lib/Doctrine/ORM/Mapping/ClassMetadataInfo.php
@@ -2643,42 +2643,6 @@ class ClassMetadataInfo implements ClassMetadata
         return $this->name;
     }
 
-    /**
-     * Gets the (possibly quoted) identifier column names for safe use in an SQL statement.
-     *
-     * @param AbstractPlatform $platform
-     * @return array
-     */
-    public function getQuotedIdentifierColumnNames($platform)
-    {
-        $quotedColumnNames = array();
-
-        foreach ($this->identifier as $idProperty) {
-            if (isset($this->fieldMappings[$idProperty])) {
-                $quotedColumnNames[] = isset($this->fieldMappings[$idProperty]['quoted'])
-                    ? $platform->quoteIdentifier($this->fieldMappings[$idProperty]['columnName'])
-                    : $this->fieldMappings[$idProperty]['columnName'];
-
-                continue;
-            }
-
-            // Association defined as Id field
-            $joinColumns            = $this->associationMappings[$idProperty]['joinColumns'];
-            $assocQuotedColumnNames = array_map(
-                function ($joinColumn) {
-                    return isset($joinColumn['quoted'])
-                        ? $platform->quoteIdentifier($joinColumn['name'])
-                        : $joinColumn['name'];
-                },
-                $joinColumns
-            );
-
-            $quotedColumnNames = array_merge($quotedColumnNames, $assocQuotedColumnNames);
-        }
-
-        return $quotedColumnNames;
-    }
-
     /**
      * Gets the (possibly quoted) column name of a mapped field for safe use
      * in an SQL statement.