fix: remove dead providers (BlastAPI shutdown, Ankr key-gated, dRPC/1RPC not supported)

[Flotapponnier]

Summary

• BlastAPI officially shut down → removed from fantom, haqq, etherlink, wemix, wemix, songbird, telos, zetachain, cronos-zkevm
• Ankr now key-gated → removed from fantom and etherlink
• dRPC returns 404 (chain not listed) → removed from chiliz and warden
• 1RPC "unknown network" → removed from wemix; "Not Allowed" → removed from kusama
• IBP + Dwellir consistently timing out → removed from kusama
• LavenderFive down → removed from oraichain
• Peaq Foundation timing out → removed from peaq

All changes in config.go (harness) + 12 YAML bench files (frontend).