[TASK] Remove superfluous TCA translation key sys_template.editorcfg

Removes last occurrence of an removed TYPO3 relict named "tstemplate_styler"

Resolves: #99761
Releases: main
Change-Id: I43c15f73dc2d3c98574569e0ceb6a2c17ede04ee
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/77646


Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>

typo3/sysext/frontend/Resources/Private/Language/locallang_tca.xlf

@@ -491,9 +491,6 @@
 			<trans-unit id="sys_template.config" resname="sys_template.config">
 				<source>Setup</source>
 			</trans-unit>
-			<trans-unit id="sys_template.editorcfg" resname="sys_template.editorcfg">
-				<source>Backend Editor Configuration</source>
-			</trans-unit>
 			<trans-unit id="sys_template.description" resname="sys_template.description">
 				<source>Description</source>
 			</trans-unit>