Remove unnecessary main methods

Author: shs96c

java/client/src/org/openqa/selenium/json/JsonOutput.java

@@ -378,16 +378,4 @@ default void accept(T t, U u) {
       }
     }
   }
-
-  public static void main(String[] args) {
-    StringBuilder builder = new StringBuilder();
-    JsonOutput jsonOutput = new Json().newOutput(builder);
-
-    jsonOutput.beginObject()
-        .name("cheeses").beginArray().write("brie").write("gouda").endArray()
-        .name("nested").beginObject().name("key").write("value").endObject()
-        .endObject();
-
-    System.out.println(builder.toString());
-  }
 }

java/client/src/org/openqa/selenium/net/NetworkUtils.java

@@ -214,11 +214,4 @@ private static void dumpAddresses(StringBuilder result, Iterable<InetAddress> in
       result.append("\n");
     }
   }
-
-  @SuppressWarnings({"UseOfSystemOutOrSystemErr"})
-  public static void main(String[] args) {
-    System.out.println(getNetWorkDiags());
-  }
-
-
 }