remove duplicate test logging configuration

pom.xml

@@ -345,6 +345,11 @@
                     <include>test/**/*.yaml</include>
                 </includes>
             </testResource>
+             <!-- shared test resources like log4j.properties -->
+            <testResource>
+                <directory>${elasticsearch.tools.directory}/shared-test-resources</directory>
+                <filtering>false</filtering>
+            </testResource>
         </testResources>
 
         <plugins>

src/test/resources/log4j.properties

@@ -1,9 +0,0 @@
-es.logger.level=INFO
-log4j.rootLogger=${es.logger.level}, out
-
-log4j.logger.org.apache.http=INFO, out
-log4j.additivity.org.apache.http=false
-
-log4j.appender.out=org.apache.log4j.ConsoleAppender
-log4j.appender.out.layout=org.apache.log4j.PatternLayout
-log4j.appender.out.layout.conversionPattern=[%d{ISO8601}][%-5p][%-25c] %m%n