EZP-28028: As a Developer I want API removing Translations to use con…

…sistent naming (#2130)

* EZP-28028: Renamed Content GW method for deleting Transl. from all Ver.

Renamed eZ\Publish\Core\Persistence\Legacy\Content\Gateway::removeTranslationFromContent
to deleteTranslationFromContent

* EZP-28028: [SPI] Deprecated Content Handler removeTranslationFromContent

Deprecated SPI\Persistence\Content\Handler::removeTranslationFromContent
in favor of deleteTranslationFromContent

* EZP-28028: [PAPI] Added ContentService::deleteTranslation method

Deprecated removeTranslation in favor of deleteTranslation

* EZP-28028: Refactored tests to use ContentService::deleteTranslation

* EZP-28028: Renamed related command to delete-content-translation

Renamed remove-content-translation to align with changed naming convention

* EZP-28028: [Spec] Aligned removal specification with changes

* EZP-28028: Added DeleteTranslationSignal deprecating the old one

* Deprecated RemoveTranslationSignal

* EZP-28028: Renamed Search Slot RemoveTranslation to DeleteTranslation

* EZP-28028: Renamed HttpCache Slot to DeleteTranslationSlot

* EZP-28028: Created BC notes

Persistence/Content/Handler.php

@@ -262,11 +262,21 @@ public function publish($contentId, $versionNo, MetadataUpdateStruct $metaDataUp
     /**
      * Remove the specified translation from all the Versions of a Content Object.
      *
+     * @deprecated since 6.13, use {@see deleteTranslationFromContent} instead
+     *
      * @param int $contentId
      * @param string $languageCode language code of the translation
      */
     public function removeTranslationFromContent($contentId, $languageCode);
 
+    /**
+     * Delete the specified translation from all the Versions of a Content Object.
+     *
+     * @param int $contentId
+     * @param string $languageCode language code of the translation
+     */
+    public function deleteTranslationFromContent($contentId, $languageCode);
+
     /**
      * Remove the specified Translation from the given Version Draft of a Content Object.
      *