Remove copilot instruction

Author: dan-hughes

.github/instructions/SqlServerDsc-guidelines.instructions.md

@@ -37,7 +37,6 @@ applyTo: "**"
 - Unit tests: Add `$env:SqlServerDscCI = $true` in `BeforeAll`, remove in `AfterAll`
 - Integration tests:
   - Use `Connect-SqlDscDatabaseEngine` for SQL Server DB session, and always with correct CI credentials
-  - Use `Disconnect-SqlDscDatabaseEngine` after `Connect-SqlDscDatabaseEngine`
   - Test config: tests/Integration/Commands/README.md and tests/Integration/Resources/README.md
   - Integration test script files must be added to a group within the test stage in ./azure-pipelines.yml.
     - Choose the appropriate group number based on the required dependencies