Remove unused `helpers` package with single subpackage.

lib/library.go

@@ -10,7 +10,7 @@ import (
 	"github.com/status-im/status-go/geth/common"
 	"github.com/status-im/status-go/geth/log"
 	"github.com/status-im/status-go/geth/params"
-	"github.com/status-im/status-go/helpers/profiling"
+	"github.com/status-im/status-go/profiling"
 	"gopkg.in/go-playground/validator.v9"
 )
 

profiling/cpu.go

@@ -3,21 +3,13 @@ package profiling
 import (
 	"os"
 	"path/filepath"
-	"runtime"
 	"runtime/pprof"
 )
 
-const (
-	// CPUFilename is a filename in which the CPU profiling is stored.
-	CPUFilename = "status_cpu.prof"
-	// MemFilename is a filename in which the memory profiling is stored.
-	MemFilename = "status_mem.prof"
-)
+// CPUFilename is a filename in which the CPU profiling is stored.
+const CPUFilename = "status_cpu.prof"
 
-var (
-	cpuFile *os.File
-	memFile *os.File
-)
+var cpuFile *os.File
 
 // StartCPUProfile enables CPU profiling for the current process. While profiling,
 // the profile will be buffered and written to the file in folder dataDir.
@@ -41,17 +33,3 @@ func StopCPUProfile() error {
 	pprof.StopCPUProfile()
 	return cpuFile.Close()
 }
-
-// WriteHeapFile writes heap memory to the file.
-func WriteHeapFile(dataDir string) error {
-	if memFile == nil {
-		var err error
-		memFile, err = os.Create(filepath.Join(dataDir, MemFilename))
-		if err != nil {
-			return err
-		}
-		defer memFile.Close()
-	}
-	runtime.GC()
-	return pprof.WriteHeapProfile(memFile)
-}

profiling/heap.go

@@ -0,0 +1,30 @@
+package profiling
+
+import (
+	"os"
+	"path/filepath"
+	"runtime"
+	"runtime/pprof"
+)
+
+// MemFilename is a filename in which the memory profiling is stored.
+const MemFilename = "status_mem.prof"
+
+var memFile *os.File
+
+// WriteHeapFile writes heap memory to the file.
+func WriteHeapFile(dataDir string) error {
+	var err error
+
+	if memFile == nil {
+		memFile, err = os.Create(filepath.Join(dataDir, MemFilename))
+		if err != nil {
+			return err
+		}
+		defer memFile.Close() //nolint: errcheck
+	}
+	runtime.GC()
+	err = pprof.WriteHeapProfile(memFile)
+
+	return err
+}