Remove phpstan from phive

Author: jaapio

phive.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phive xmlns="https://phar.io/phive">
   <phar name="phpunit" version="^8.4.3" installed="8.4.3" location="./tools/phpunit" copy="true"/>
-  <phar name="phpstan" version="^0.9.1" installed="0.12.32" location="./tools/phpstan" copy="true"/>
   <phar name="psalm" version="^3.12.1" installed="3.12.1" location="./tools/psalm" copy="true"/>
 </phive>