fix: remove redundante names

service/clock.go

@@ -2,16 +2,16 @@ package service
 
 import "time"
 
-type ClockService interface {
+type Clock interface {
 	Now() time.Time
 }
 
-type ClockServiceImpl struct{}
+type ClockImpl struct{}
 
-func NewClockServiceImpl() ClockService {
-	return &ClockServiceImpl{}
+func NewClockImpl() Clock {
+	return &ClockImpl{}
 }
 
-func (c *ClockServiceImpl) Now() time.Time {
+func (c *ClockImpl) Now() time.Time {
 	return time.Now()
 }