chore(distro): remove glassfish from Camunda BPM

- as it is no longer supported

related to #CAM-5762

README.md

@@ -90,7 +90,6 @@ This will build all the modules that make up the camunda BPM platform but will n
 
 ```
 distro/tomcat/distro/target (Apache Tomcat 7 Distribution)
-distro/gf31/distro/target (Glassfish 3 Distribution)
 distro/jbossas7/distro/target (JBoss AS 7 Distribution)
 ```
 
@@ -103,9 +102,9 @@ The integration testsuites are located under `qa/`. There you'll find a folder n
 In order to run the integration tests, first perform a full install build. Then navigate to the `qa` folder.
 
 We have different maven profiles for selecting
-* *Runtime containers & environments*: jboss, glassfish, tomcat, wildfly
+* *Runtime containers & environments*: jboss, tomcat, wildfly
 * *The testsuite*: engine-integration, webapps-integration
-* *The database*: h2,h2-xa,db2,db2-xa,sqlserver,sqlserver-xa,oracle,oracle-xa,postgresql,postgresql-xa,mysql,mysql-xa (XA is only supprted on JBoss & Glassfish ATM)
+* *The database*: h2,h2-xa,db2,db2-xa,sqlserver,sqlserver-xa,oracle,oracle-xa,postgresql,postgresql-xa,mysql,mysql-xa (XA is only supported on JBoss / Wildfly atm)
 
 In order to configure the build, compose the profiles for runtime container, testsuite, database. Example: