remove deplicate annotation case

Author: Duncan-tree-zhou

instrumentation/opentelemetry-instrumentation-annotations/opentelemetry-instrumentation-annotations-incubator/javaagent/src/test/java/io/opentelemetry/javaagent/instrumentation/instrumentationannotations/incubator/counted/CountedExample.java

@@ -30,7 +30,6 @@ public void exampleWithUnit() {}
   @Counted(name = "example.with.static.attributes.count")
   @StaticAttribute(name = "key1", value = "value1")
   @StaticAttribute(name = "key2", value = "value2")
-  @StaticAttribute(name = "key2", value = "value2")
   public void exampleWithStaticAttributes() {}
 
   @Counted(name = "example.with.attributes.count")