feat: remove .Ready from contentrouter (no longer needed)

Author: hacdias

routing/http/contentrouter/contentrouter.go

@@ -55,11 +55,6 @@ func (c *contentRouter) ProvideMany(ctx context.Context, mhKeys []multihash.Mult
 	return routing.ErrNotSupported
 }
 
-// Ready is part of the existing `ProvideMany` interface.
-func (c *contentRouter) Ready() bool {
-	return true
-}
-
 // readProviderResponses reads bitswap records from the iterator into the given channel, dropping non-bitswap records.
 func readProviderResponses(iter iter.ResultIter[types.Record], ch chan<- peer.AddrInfo) {
 	defer close(ch)