simplify makefile

Author: lukaszcl

tools/flakeguard/Makefile

@@ -1,12 +1,14 @@
 .PHONY: test_unit
 test_unit:
-	go list ./... | grep -v 'example_test_package' | xargs go test -timeout 5m -json -cover -covermode=count -coverprofile=unit-test-coverage.out 2>&1 | tee /tmp/gotest.log | gotestloghelper -ci
+	# No longer need grep, example package excluded by build tag
+	go test ./... -timeout 5m -json -cover -covermode=count -coverprofile=unit-test-coverage.out 2>&1 | tee /tmp/gotest.log | gotestloghelper -ci
 
 .PHONY: test
 test:
 	go install github.com/gotesttools/gotestfmt/v2/cmd/gotestfmt@latest
 	set -euo pipefail
-	go list ./... | grep -v 'example_test_package' | xargs go test -json -cover -coverprofile unit-test-coverage.out -v 2>&1 | tee /tmp/gotest.log | gotestfmt
+	# No longer need grep, example package excluded by build tag
+	go test ./... -json -cover -coverprofile unit-test-coverage.out -v 2>&1 | tee /tmp/gotest.log | gotestfmt
 
 .PHONY: test-package
 test-package:
@@ -16,7 +18,8 @@ test-package:
 
 .PHONY: test-race
 test-race:
-	go list ./... | grep -v 'example_test_package' | xargs go test -count=1 -race
+	# No longer need grep, example package excluded by build tag
+	go test ./... -count=1 -race
 
 .PHONY: bench
 bench: