Apply suggestion from @jaydeluca

Co-authored-by: Jay DeLuca <jaydeluca4@gmail.com>

Author: jackshirazi

dynamic-control/src/main/java/io/opentelemetry/contrib/dynamic/policy/registry/PolicyInitConfig.java

@@ -248,7 +248,7 @@ private static String normalizeOptionalDeclarativeText(@Nullable String value) {
   }
 
   @Nullable
-  static ConfigProvider getConfigProvider(@Nullable OpenTelemetry openTelemetry) {
+  private static ConfigProvider getConfigProvider(@Nullable OpenTelemetry openTelemetry) {
     return openTelemetry instanceof ExtendedOpenTelemetry
         ? ((ExtendedOpenTelemetry) openTelemetry).getConfigProvider()
         : null;