Simplify text editor fallback

src/cli/initUNIX.go

@@ -2,17 +2,4 @@
 
 package cli
 
-import (
-	"os"
-)
-
-const fallbackEditor = "vi" // vi is pre-installed on most UNIX systems
-
-// textEditorFallback returns the value of the $EDITOR environment variable, or FallbackEditor if it is not set
-func textEditorFallback() string {
-	textEditor := os.Getenv("EDITOR")
-	if textEditor == "" {
-		textEditor = fallbackEditor
-	}
-	return textEditor
-}
+const fallbackEditor = "vi" // vi is pre-installed on most UNIX-like systems