Fixes #35005: Drop setting Pulp client certificate settings
These settings were introduced with Pulp 2 and carried over to Pulp 3 before we introduced client authentication support in smart_proxy_pulp. The support for using Foreman client certificates to talk to Pulp 3 was introduced in Foreman 3.0. This is now safe to drop.
Fixes #35005: Drop setting Pulp client certificate settings
These settings were introduced with Pulp 2 and carried over to Pulp
3 before we introduced client authentication support in smart_proxy_pulp.
The support for using Foreman client certificates to talk to Pulp 3 was
introduced in Foreman 3.0. This is now safe to drop.