It's not recommended to uninstall EAP installed via RPM [1]. We should have something similar for hawkular agent. [1] - https://access.redhat.com/documentation/en-us/red_hat_jboss_enterprise_application_platform/7.0/html/installation_guide/uninstalling_jboss_eap#uninstalling_jboss_eap_rpm_installation
Added a topic/note recommending against un-installing an EAP agent installed via RPM. https://doc-stage.usersys.redhat.com/documentation/en-us/red_hat_middleware_management/7.0.techpreview/html-single/installing_red_hat_middleware_management_with_cloudforms/#uninstalling_the_middleware_management_agent