Create simplify skill. Delete other unnecessary skills

Author: jahooma

.agents/skills/cleanup/SKILL.md

@@ -0,0 +1,8 @@
+---
+name: simplify
+description: Simplify changes
+---
+
+# Simplify
+
+Take a new look at the whole change so far with fresh eyes. What opportunities do you see to simplify the design or implementation? What opportunities do you see to improve the design or implementation? Make a full pass to rethink the change and come up with the cleanest solution.