X neotest: No need to explicitly install github.com/pkg/profile

github.com/pkg/profile is not used anywhere now because go123/prog (used
by tzodb.go) now always adds -cpuprofile & friends to every program:

go123@f1c839d8

go/neo/t/neotest

@@ -100,7 +100,6 @@ EOF
 	pip install cython	# for tcpenalty.py
 
 	go get -v lab.nexedi.com/kirr/neo/go/...
-	go get -v github.com/pkg/profile			# used by zhash.go
 	go get -v golang.org/x/perf/cmd/benchstat		# to summarize/diff benchmark results
 	#go get -v github.com/aclements/perflock/cmd/perflock	# handy to fix CPU frequency/etc