Revert "Activate race-detection for those modules that are passing it"

This reverts commit 845a00b.

Reasons for reversal:
- provided impetus for clearing out races (onflow#1073, onflow#1095)
- network tests now pass with race detector on!
- but those  timings are preposterous

Makefile

@@ -63,10 +63,8 @@ install-tools: crypto/relic/build check-go-version
 
 .PHONY: unittest
 unittest:
-	# test some packages with Relic library and data race detection enabled
-	GO111MODULE=on go test -coverprofile=$(COVER_PROFILE) -covermode=atomic $(if $(JSON_OUTPUT),-json,) -race --tags relic ./access/... ./consensus/... ./model/... ./state/... ./storage/... ./utils/...
 	# test all packages with Relic library enabled
-	GO111MODULE=on go test -coverprofile=$(COVER_PROFILE) -covermode=atomic $(if $(JSON_OUTPUT),-json,) --tags relic ./cmd...  ./engine/... ./fvm/... ./ledger/... ./module/... ./network/...
+	GO111MODULE=on go test -coverprofile=$(COVER_PROFILE) -covermode=atomic $(if $(JSON_OUTPUT),-json,) --tags relic ./...
 	$(MAKE) -C crypto test
 	$(MAKE) -C integration test