Remove unused hamcrest dependency

Author: retiutut

GuiUnitTests/GuiUnitTests.pde

@@ -4,7 +4,11 @@ import org.junit.runner.JUnitCore;
 import org.junit.runner.Result;
 import org.junit.runner.notification.Failure;
 import org.junit.runner.RunWith;
-import org.hamcrest.SelfDescribing;
+import java.time.LocalDateTime;
+import java.time.Instant;
+import java.time.format.DateTimeFormatter;
+import java.time.temporal.ChronoUnit;
+ 
 
 static GuiUnitTests currentApplet;
 final String failFileName = "UNITTEST_FAILURE";