Fixing PHPunit 8.0 complaints

Signed-off-by: Chris Hallgren <[email protected]>

Author: challgren

phpunit.xml.dist

@@ -31,7 +31,7 @@
     <logging>
         <log type="tap" target="build/report.tap"/>
         <log type="junit" target="build/report.junit.xml"/>
-        <log type="coverage-html" target="build/coverage" charset="UTF-8" yui="true" highlight="true"/>
+        <log type="coverage-html" target="build/coverage"/>
         <log type="coverage-text" target="build/coverage.txt"/>
         <log type="coverage-clover" target="build/logs/clover.xml"/>
     </logging>