Spring Security Remove -PdeployDocsHost=docs-ip.spring.io from Build

The update of build conventions means the default docs server is correct, so we can remove the explicit setting of the host.

See gh-10020 and https://github.com/spring-gradle-plugins/spring-build-conventions/pull/93

Comment From: spring-projects-issues

Fixed via 84118a7d44a39e2a69928d788a7fc50f4a90f630