[TASK] Remove relationTableWhereStatement from ColumnMap

Private property ColumnMap->relationTableWhereStatement
is unused and can be removed from the codebase without
further impact.

Resolves: #100239
Releases: main
Change-Id: Ibc40c48fef8e1e88e0ac0807017c477b3acea62d
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/78199


Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: Benni Mack <benni@typo3.org>

Build/phpstan/phpstan-baseline.neon

@@ -1615,11 +1615,6 @@ parameters:
 			count: 1
 			path: ../../typo3/sysext/extbase/Classes/Mvc/Request.php
 
-		-
-			message: "#^Property TYPO3\\\\CMS\\\\Extbase\\\\Persistence\\\\Generic\\\\Mapper\\\\ColumnMap\\:\\:\\$relationTableWhereStatement is unused\\.$#"
-			count: 1
-			path: ../../typo3/sysext/extbase/Classes/Persistence/Generic/Mapper/ColumnMap.php
-
 		-
 			message: "#^Call to an undefined method TYPO3\\\\CMS\\\\Extbase\\\\Persistence\\\\Generic\\\\Qom\\\\JoinConditionInterface\\:\\:getProperty1Name\\(\\)\\.$#"
 			count: 1

typo3/sysext/extbase/Classes/Persistence/Generic/Mapper/ColumnMap.php

@@ -133,18 +133,6 @@ class ColumnMap
      */
     private $relationTableInsertFields;
 
-    /**
-     * todo: Check if this property should support null. If not, set default value.
-     *
-     * todo: Check if this property should be dropped as it's not in use. Basically we have to answer the question if
-     * todo: MM_table_where should have any impact on Extbase at all.
-     * The where clause to narrow down the selected relation table records
-     *
-     * @see https://docs.typo3.org/m/typo3/reference-tca/main/en-us/ColumnsConfig/Type/Group/Properties/Mm.html#confval-MM_insert_fields(type=%3Egroup)
-     * @var string|null
-     */
-    private $relationTableWhereStatement;
-
     /**
      * todo: Check if this property should support null. If not, set default value.
      * The name of the field holding the parents key