fix: properly unset variables after use in SocketServer

[jenksed]

fix: properly unset variables after use in SocketServer

• Add strategic variable cleanup in loopOnce() to prevent memory leaks
• Clean up loop variables in triggerHooks() after each iteration
• Improve memory management in shutDownEverything() with explicit cleanup
• Add variable cleanup in removeHook()
• Handle variable cleanup before early returns

This commit addresses memory leaks by ensuring all variables are properly
unset when they are no longer needed, particularly in long-running server
operations and loops.