Drop jboss-jaxrpc-api_1.1_spec dep from jbossws-common pom dependency management

The jbossws-common pom includes this but AFAICT there is no use of javax.xml.rpc packages in it.

    <dependency>
      <groupId>org.jboss.spec.javax.xml.rpc</groupId>
      <artifactId>jboss-jaxrpc-api_1.1_spec</artifactId>
      <version>${jaxrpc.api.version}</version>
      <scope>provided</scope>
    </dependency>

This was triggered by my looking into WFLY-13663, trying to clean out uses of WildFly's javax.xml.rpc.api module. The module that provides jbossws-common has such a use, but I suspect it's not needed any more.