chore(pkgs): remove useless pkgs

src/logging/log_interface.go

@@ -1,9 +0,0 @@
-package logging
-
-type ILogger interface {
-	Debug()
-	Log(values ...interface{})
-	Logf(pattern string, values ...interface{})
-	Error(values ...interface{})
-	Errorf(pattern string, values ...interface{})
-}

src/logging/simplelog/simple_log.go

@@ -1,32 +0,0 @@
-package simplelog
-
-import (
-	"fmt"
-	"log"
-)
-
-type SimpleLogger struct {
-	debug bool
-}
-
-func NewSimpleLogger() *SimpleLogger {
-	return &SimpleLogger{}
-}
-
-func (l *SimpleLogger) Debug() {
-	l.debug = true
-}
-
-func (l *SimpleLogger) Log(values ...interface{}) {
-	log.Println(values...)
-}
-
-func (l *SimpleLogger) Logf(pattern string, values ...interface{}) {
-	log.Printf(pattern, values...)
-}
-func (l *SimpleLogger) Error(values ...interface{}) {
-	log.Println(append([]interface{}{"error:"}, values...)...)
-}
-func (l *SimpleLogger) Errorf(pattern string, values ...interface{}) {
-	log.Printf(fmt.Sprintf("error: %s", pattern), values...)
-}