delete the file after assertion

Author: navin772

examples/java/src/test/java/dev/selenium/browsers/FirefoxTest.java

@@ -185,6 +185,7 @@ public void fullPageScreenshot() throws Exception {
 
     // Verify the screenshot file exists
     Assertions.assertTrue(targetFile.exists(), "The full page screenshot file should exist");
+    Files.deleteIfExists(targetFile.toPath());
 
     driver.quit();
   }