make final, drop test for now

Author: mindw

simpleclient/src/main/java/io/prometheus/client/Collector.java

@@ -398,8 +398,7 @@ public static String doubleToGoString(double d) {
 
   protected static final String DISABLE_CREATED_SERIES = "PROMETHEUS_DISABLE_CREATED_SERIES";
   private static final List<String> TRUTHS = Arrays.asList("true", "1", "t");
-
-  protected static boolean USE_CREATED = getUseCreated();
+  protected static final boolean USE_CREATED = getUseCreated();
 
   protected static boolean getUseCreated() {
     String disable_series = System.getenv(DISABLE_CREATED_SERIES);