sweet/benchmarks/internal/driver: delete now-unused diagnostics code

Change-Id: Ie4376c70a17c718373064d30577b3afef0f5365b
Cq-Include-Trybots: luci.golang.try:x_benchmarks-gotip-linux-amd64-longtest
Reviewed-on: https://go-review.googlesource.com/c/benchmarks/+/600070
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Pratt <mpratt@google.com>

sweet/benchmarks/internal/driver/driver.go

@@ -21,7 +21,6 @@ import (
 	"sync"
 	"time"
 
-	"github.com/google/pprof/profile"
 	"golang.org/x/benchmarks/sweet/common/diagnostics"
 )
 
@@ -575,49 +574,10 @@ func DiagnosticEnabled(typ diagnostics.Type) bool {
 	return ok
 }
 
-// TODO: Delete below here
-
-func WritePprofProfile(prof *profile.Profile, typ diagnostics.Type, pattern string) error {
-	if !typ.IsPprof() {
-		return fmt.Errorf("this type of diagnostic doesn't use the pprof format")
-	}
-	if !DiagnosticEnabled(typ) {
-		return fmt.Errorf("this type of diagnostic is not currently enabled")
-	}
-	f, err := newDiagnosticDataFile(typ, pattern)
-	if err != nil {
-		return err
-	}
-	defer f.Close()
-	return prof.Write(f)
-}
-
-func CopyDiagnosticData(diagPath string, typ diagnostics.Type, pattern string) error {
-	inF, err := os.Open(diagPath)
-	if err != nil {
-		return err
-	}
-	defer inF.Close()
-	outF, err := newDiagnosticDataFile(typ, pattern)
-	if err != nil {
-		return err
-	}
-	defer outF.Close()
-	_, err = io.Copy(outF, inF)
-	return err
-}
-
 func PerfFlags() []string {
 	cfg, ok := diag.ConfigSet.Get(diagnostics.Perf)
 	if !ok {
 		panic("perf not enabled")
 	}
 	return strings.Split(cfg.Flags, " ")
 }
-
-func newDiagnosticDataFile(typ diagnostics.Type, pattern string) (*os.File, error) {
-	if !DiagnosticEnabled(typ) {
-		return nil, fmt.Errorf("this type of profile is not currently enabled")
-	}
-	return os.CreateTemp(diag.ResultsDir, pattern+"."+string(typ))
-}

sweet/cmd/sweet/run.go

@@ -447,7 +447,7 @@ func (c *runCmd) preparePGO(configs []*common.Config, benchmarks []*benchmark) (
 	return newConfigs, nil
 }
 
-var cpuProfileRe = regexp.MustCompile(`\.cpuprofile[0-9]+|-cpu\.prof$`)
+var cpuProfileRe = regexp.MustCompile(`-cpu\.prof$`)
 
 func mergeCPUProfiles(dir string) (string, error) {
 	profiles, err := sprofile.ReadDirPprof(dir, func(name string) bool {