Remove redundant configurations

These are defaults anyway so there is no reason to clutter the config. There is also no need for the bootstrap file as it only includes the autoloader.

Author: jakzal

phpunit.xml.dist

@@ -1,14 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phpunit backupGlobals="false"
-    backupStaticAttributes="false"
     colors="true"
-    convertErrorsToExceptions="true"
-    convertNoticesToExceptions="true"
-    convertWarningsToExceptions="true"
-    processIsolation="false"
-    stopOnFailure="false"
-    syntaxCheck="false"
-    bootstrap="tests/bootstrap.php"
+    bootstrap="vendor/autoload.php"
     >
     <testsuites>
         <testsuite name="PHP Matcher Test Suite">