Update configuration.md

Author: bhillkeyfactor

docsource/configuration.md

@@ -403,34 +403,6 @@ Each certificate template discovered from Idnomic requires configuration when us
 
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-### Test Case 9: Client Certificate Expiration Handling
-
-**Objective**: Verify proper error handling when the Gateway client certificate expires or becomes invalid.
-
-**Prerequisites**:
-- Ability to test with expired or invalid client certificate
-- Valid backup client certificate available
-
-**Test Steps**:
-1. Configure Gateway with expired client certificate
-2. Attempt any operation (Ping, Enrollment, Sync)
-3. Observe error handling
-4. Replace with valid certificate and retry
-
-**Expected Results**:
-- Operations fail with clear error indicating certificate issue
-- Error message specifies certificate expiration or invalidity
-- After replacing certificate, operations succeed
-- No system instability occurs
-
-**Verification**:
-- Check error messages are user-friendly and actionable
-- Verify Gateway logs contain detailed certificate validation errors
-- Confirm system recovers gracefully after certificate replacement
-- Review Idnomic PKI logs for authentication failure records
-
----
-
 
 ## Certificate Template Creation Step