remove log.Lshortfile from log lines

it was adding src line number to debug prints

build.go

@@ -77,7 +77,7 @@ func (b *BuildFlags) Init() error {
 
  b.Stdout = os.Stdout
  b.Stderr = os.Stderr
- b.Log = log.New(os.Stdout, "", log.LstdFlags|log.Lshortfile)
+ b.Log = log.New(os.Stdout, "", log.LstdFlags)
  b.FS = &fs.FS{}
 
  return nil