Fixed directory cleaning script

clean-directory

@@ -11,3 +11,4 @@ rm -f *.lol 2> /dev/null
 rm -f *.log 2> /dev/null
 rm -f *.out 2> /dev/null
 rm -f *.run.xml 2> /dev/null
+rm -f flycheck_* 2> /dev/null