[#9204] Backport: Fix log level of abstract method transform

Author: jaehong-kim

profiler/src/main/java/com/navercorp/pinpoint/profiler/instrument/ASMMethod.java

@@ -159,7 +159,7 @@ private void addInterceptor0(Interceptor interceptor, int interceptorId) {
         }
 
         if (this.methodNode.isAbstract() || this.methodNode.isNative()) {
-            logger.warn("Skip adding interceptor. 'abstract or native method' class={}, interceptor={}", this.declaringClass.getName(), interceptorClass.getName());
+            logger.info("Skip adding interceptor. 'abstract or native method' class={}, interceptor={}", this.declaringClass.getName(), interceptorClass.getName());
             return;
         }