chore: delete dead pprof related code (#22892)

cmd/influxd/internal/profile/profile.go

@@ -1,66 +0,0 @@
-package profile
-
-import (
-	"log"
-	"os"
-	"runtime"
-	"runtime/pprof"
-
-	"github.com/influxdata/influxdb/v2/pkg/fs"
-)
-
-type Config struct {
-	// CPU, if set, specifies the file name of the CPU profile to capture
-	CPU string
-
-	// Memory, if set, specifies the file name of the CPU profile to capture
-	Memory string
-}
-
-func (c *Config) noProfiles() bool {
-	return c.CPU == "" && c.Memory == ""
-}
-
-// Start starts a CPU and / or Memory profile if configured and returns a
-// function that should be called to terminate the profiles.
-func (c *Config) Start() func() {
-	if c.noProfiles() {
-		return func() {}
-	}
-
-	var prof struct {
-		cpu *os.File
-		mem *os.File
-	}
-
-	if c.CPU != "" {
-		f, err := fs.CreateFile(c.CPU)
-		if err != nil {
-			log.Fatalf("cpuprofile: %v", err)
-		}
-		prof.cpu = f
-		_ = pprof.StartCPUProfile(prof.cpu)
-	}
-
-	if c.Memory != "" {
-		f, err := fs.CreateFile(c.Memory)
-		if err != nil {
-			log.Fatalf("memprofile: %v", err)
-		}
-		prof.mem = f
-		runtime.MemProfileRate = 4096
-	}
-
-	return func() {
-		if prof.cpu != nil {
-			pprof.StopCPUProfile()
-			_ = prof.cpu.Close()
-			prof.cpu = nil
-		}
-		if prof.mem != nil {
-			_ = pprof.Lookup("heap").WriteTo(prof.mem, 0)
-			_ = prof.mem.Close()
-			prof.mem = nil
-		}
-	}
-}