chore: remove libp2p deps from webrtc transport #3691

Job	Run time
Build	3m 3s
Test example js-libp2p-example-browser-pubsub	1m 58s
Test example js-libp2p-example-chat	1m 24s
Test example js-libp2p-example-circuit-relay	1m 43s
Test example js-libp2p-example-connection-encryption	1m 8s
Test example js-libp2p-example-custom-protocols	1m 20s
Test example js-libp2p-example-delegated-routing	2m 16s
Test example js-libp2p-example-discovery-mechanisms	1m 37s
Test example js-libp2p-example-peer-and-content-routing	1m 17s
Test example js-libp2p-example-pnet	58s
Test example js-libp2p-example-protocol-and-stream-muxing	58s
Test example js-libp2p-example-pubsub	1m 43s
Test example js-libp2p-example-transports	1m 3s
Test example js-libp2p-example-webrtc-private-to-private	1m 51s
	22m 19s

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