chore: Remove WebRTC networking (#3881)

* chore: Remove WebRTC networking

* Fix race condition

* Fix WebSocket not closing

Makefile

@@ -386,7 +386,6 @@ lint/shellcheck: $(shell shfmt -f .)
 gen: \
 	coderd/database/dump.sql \
 	coderd/database/querier.go \
-	peerbroker/proto/peerbroker.pb.go \
 	provisionersdk/proto/provisioner.pb.go \
 	provisionerd/proto/provisionerd.pb.go \
 	site/src/api/typesGenerated.ts
@@ -395,7 +394,7 @@ gen: \
 # Mark all generated files as fresh so make thinks they're up-to-date. This is
 # used during releases so we don't run generation scripts.
 gen/mark-fresh:
-	files="coderd/database/dump.sql coderd/database/querier.go peerbroker/proto/peerbroker.pb.go provisionersdk/proto/provisioner.pb.go provisionerd/proto/provisionerd.pb.go site/src/api/typesGenerated.ts"
+	files="coderd/database/dump.sql coderd/database/querier.go provisionersdk/proto/provisioner.pb.go provisionerd/proto/provisionerd.pb.go site/src/api/typesGenerated.ts"
 	for file in $$files; do
 		echo "$$file"
 		if [ ! -f "$$file" ]; then
@@ -417,14 +416,6 @@ coderd/database/dump.sql: coderd/database/gen/dump/main.go $(wildcard coderd/dat
 coderd/database/querier.go: coderd/database/sqlc.yaml coderd/database/dump.sql $(wildcard coderd/database/queries/*.sql) coderd/database/gen/enum/main.go
 	./coderd/database/generate.sh
 
-peerbroker/proto/peerbroker.pb.go: peerbroker/proto/peerbroker.proto
-	protoc \
-		--go_out=. \
-		--go_opt=paths=source_relative \
-		--go-drpc_out=. \
-		--go-drpc_opt=paths=source_relative \
-		./peerbroker/proto/peerbroker.proto
-
 provisionersdk/proto/provisioner.pb.go: provisionersdk/proto/provisioner.proto
 	protoc \
 		--go_out=. \