chore: keep only clover xml report

Author: estahn

phpunit.xml.dist

@@ -21,10 +21,6 @@
 
     <logging>
         <log type="coverage-clover" target="build/logs/clover.xml"/>
-        <log type="coverage-html" target="build/logs/report" charset="UTF-8"
-             yui="true" highlight="true"
-             lowUpperBound="50" highLowerBound="80"/>
-        <log type="testdox-html" target="build/logs/testdox.html" />
     </logging>
 
 </phpunit>