fix: remove duplicate content in evolve.sh

Removed old fallback plan content that was causing syntax error.
The script had duplicate Phase 2 headers and orphaned plan content.

Author: Patel230

scripts/evolution/evolve.sh

@@ -231,16 +231,6 @@ EOF
     fi
   fi
 
-  # ── Phase 2: Implementation ──
-Files: cmd/iterate/, internal/evolution/
-Description: Read the source code, find one thing to improve (a bug, missing test, or UX gap), implement it, test it, and commit it.
-Issue: none
-
-### Issue Responses
-EOF
-    fi
-  fi
-
   # ── Phase 2: Implementation ──
   log "Phase 2: Implementation..."
   sleep 5  # Brief pause between phases