fix build break for plan9

text_formatter.go

@@ -84,10 +84,6 @@ type TextFormatter struct {
 func (f *TextFormatter) init(entry *Entry) {
 	if entry.Logger != nil {
 		f.isTerminal = checkIfTerminal(entry.Logger.Out)
-
-		if f.isTerminal {
-			initTerminal(entry.Logger.Out)
-		}
 	}
 }