pom: remove grizzly-framework-monitoring jar as dependency

Motivation:
grizzly framework can dynamically enable JMX monitoring when
grizzly-framework-monitoring.jar in the classpath. Thus application
can enable monitoring by explicitly defining dependency on it if needed.

Modification:
remove grizzly-framework-monitoring jar as dependency

Result:
a final application can decide to depend on grizzly-framework-monitoring
if JMX monitoring is required.

Acked-by: Olufemi Adeyemi
Target: master

README.md

@@ -305,6 +305,13 @@ OncRpcSvc service = new OncRpcSvcBuilder()
         .build();
 ```
 
+## Enabling JMX based monitoring
+
+**oncrpc4j** uses [Grizzly NIO](https://github.com/eclipse-ee4j/grizzly) framework which
+comes with it's own JMX monitoring capabilities. To enable it just add `grizzly-framework-monitoring`
+jar with it's dependencies into the application's classpath.
+See [Grizzly framework dependencies](https://javaee.github.io/grizzly/dependencies.html) for the instructions.
+
 ## Usage with JDK 9 module system
 
 With the provided stable automatic module name __org.dcache.oncrpc4j__, **oncrpc4j**

oncrpc4j-core/pom.xml

@@ -38,10 +38,6 @@
           <groupId>org.glassfish.grizzly</groupId>
           <artifactId>grizzly-framework</artifactId>
       </dependency>
-      <dependency>
-          <groupId>org.glassfish.grizzly</groupId>
-          <artifactId>grizzly-framework-monitoring</artifactId>
-      </dependency>
       <dependency>
           <groupId>com.google.guava</groupId>
           <artifactId>guava</artifactId>

pom.xml

@@ -219,11 +219,6 @@
               <artifactId>grizzly-framework</artifactId>
               <version>${grizzly-framework.version}</version>
           </dependency>
-          <dependency>
-              <groupId>org.glassfish.grizzly</groupId>
-              <artifactId>grizzly-framework-monitoring</artifactId>
-              <version>${grizzly-framework.version}</version>
-          </dependency>
           <dependency>
               <groupId>org.springframework</groupId>
               <artifactId>spring-context</artifactId>