Merge pull request #1128 from sozu-proxy/remove-router-trie #3013

Job	Run time
Build documentation	2m 32s
Coverage	5m 42s
Docker build and push to Docker Hub	10s
Test (false, stable)	3m 10s
Test (false, beta)	3m 53s
Test (nightly, true)	2m 55s
	18m 22s

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