[ci] Drop tomcat7 from readme
@@ -51,7 +51,6 @@ Running JPetStore sample under Tomcat (using the [cargo-maven2-plugin](https://c
> | -------------- | ----------- |
> | tomcat90 | Running under the Tomcat 9.0 |
> | tomcat85 | Running under the Tomcat 8.5 |
- > | tomcat70 | Running under the Tomcat 7.0 |
> | tomee80 | Running under the TomEE 8.0(Java EE 8) |
> | tomee71 | Running under the TomEE 7.1(Java EE 7) |
> | wildfly20 | Running under the WildFly 20(Java EE 8) |
