Clear the list of matching sessions.

Clear options include:

• l4 — l4 (lowercase "L" four) is the abbreviated form of Layer 4. Use the l4 option to clear the Layer 4 persistence table.
• l7-http — l7 (lowercase "L" seven) is the abbreviated form of Layer 7. Use this option to the persistence table for virtual servers handled by the httproxy engine, including HTTP, HTTPS, TCPS, and RDP. This operation targets the Layer 7 persistence table specifically.
  To prevent unintended disruption, always define filters using diagnose server-load-balance persistence filter before executing the clear operation.
  This command removes matching entries from the Layer 7 persistence table. The most common use case is clearing Source Address–based persistence entries during testing or while troubleshooting client stickiness issues.
  Note: Passive Cookie and script-based persistence methods also share the same internal table but may not appear in CLI output. Use caution when clearing persistence in mixed configurations, as the operation affects all matching entries regardless of type.