Valgrind: Remove expect to fail of a test

This seems to be fixed meanwhile.

Change-Id: Ia2868fb6d8f1fd1bd3510965c57407e1cd62067a
Reviewed-by: hjk <hjk@qt.io>

src/plugins/valgrind/valgrindmemcheckparsertest.cpp

@@ -549,7 +549,6 @@ void ValgrindMemcheckParserTest::testValgrindStartError()
     RunnerDumper dumper(&runner);
     runner.start();
     runner.waitForFinished();
-    QEXPECT_FAIL("", "Error codes of valgrind startup are currently unprocessed", Continue); //FIXME
     QVERIFY(dumper.m_errorReceived);
     // just finish without deadlock and we are fine
 }