Revert "Agentless API certificates path for security projects" (#191571)

Reverts #191248

Reverting since this configuration will be set by kibana-controller
- Resolves: elastic/agentless-api#278

config/serverless.security.yml

@@ -106,8 +106,3 @@ xpack.ml.compatibleModuleType: 'security'
 
 # Disable the embedded Dev Console
 console.ui.embeddedEnabled: false
-
-# mTLS cert paths for agentless-api calls
-xpack.fleet.agentless.api.tls.certificate: "/mnt/elastic-internal/http-certs/tls.crt"
-xpack.fleet.agentless.api.tls.key: "/mnt/elastic-internal/http-certs/tls.key"
-xpack.fleet.agentless.api.tls.ca: "/mnt/elastic-internal/http-certs/ca.crt"