Remove obsolete language string

Signed-off-by: Roland Dalmulder <contact@rolandd.com>

Author: roland-d

administrator/components/com_patchtester/language/en-GB/com_patchtester.ini

@@ -4,7 +4,6 @@
 ; Note : All ini files need to be saved as UTF-8
 
 COM_PATCHTESTER="Joomla! Patch Tester"
-COM_PATCHTESTER_40_WARNING="While Joomla! 4.0 is in development, using the patch tester is considered experimental since breaking changes may be merged into Joomla, including the code contained in a patch."
 COM_PATCHTESTER_API_LIMIT_ACTION="The GitHub API rate limit has been reached for this resource, could not connect to GitHub to perform the requested action. The rate limit will reset at %s"
 COM_PATCHTESTER_API_LIMIT_LIST="The GitHub API rate limit has been reached for this resource, could not connect to GitHub for updated data. The rate limit will reset at %s"
 COM_PATCHTESTER_APPLIED="Applied"