chore: pkg imported more than once (#67)

Author: testwill

internal/trainer/adapters/hour_mysql_repository.go

@@ -8,7 +8,6 @@ import (
 
 	"github.com/ThreeDotsLabs/wild-workouts-go-ddd-example/internal/trainer/domain/hour"
 	"github.com/go-sql-driver/mysql"
-	_ "github.com/go-sql-driver/mysql"
 	"github.com/jmoiron/sqlx"
 	"github.com/pkg/errors"
 	"go.uber.org/multierr"