Deleting unused imports

Author: barancev

java/client/src/org/openqa/selenium/devtools/CdpClientGenerator.java

@@ -28,9 +28,6 @@
 import com.google.common.collect.ImmutableMap;
 import com.google.common.io.ByteStreams;
 import org.openqa.selenium.Beta;
-import org.openqa.selenium.devtools.Command;
-import org.openqa.selenium.devtools.ConverterFunctions;
-import org.openqa.selenium.devtools.Event;
 import org.openqa.selenium.json.Json;
 import org.openqa.selenium.json.JsonInput;