[java] Avoid closing CDP connection in browser implementation since that logic now sits in RemoteWebDriver

Fixes #11401

Author: pujagani

java/src/org/openqa/selenium/chromium/ChromiumDriver.java

@@ -276,7 +276,6 @@ public void deleteNetworkConditions() {
 
   @Override
   public void quit() {
-    connection.ifPresent(Connection::close);
     super.quit();
   }
 }

java/src/org/openqa/selenium/firefox/FirefoxDriver.java

@@ -320,9 +320,6 @@ public BiDi getBiDi() {
 
   @Override
   public void quit() {
-    if (connection != null) {
-      connection.close();
-    }
     super.quit();
   }