fix!: remove pubsub #4848

Job	Run time
Build	3m 36s
Test example js-libp2p-example-circuit-relay	4m 48s
Test example js-libp2p-example-chat	4m 41s
Test example js-libp2p-example-browser-pubsub	3m 43s
Test example js-libp2p-example-custom-protocols	3m 21s
Test example js-libp2p-example-delegated-routing	4m 24s
Test example js-libp2p-example-connection-encryption	2m 42s
Test example js-libp2p-example-pubsub	4m 6s
Test example js-libp2p-example-discovery-mechanisms	3m 42s
Test example js-libp2p-example-peer-and-content-routing	3m 7s
Test example js-libp2p-example-protocol-and-stream-muxing	2m 0s
Test example js-libp2p-example-pnet	3m 15s
Test example js-libp2p-example-webrtc-private-to-private	3m 41s
Test example js-libp2p-example-transports	2m 30s
	49m 36s

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