Revert "add ExampleCheck"

This reverts commit 4d47a04.

checkip_check_test.go

@@ -11,18 +11,21 @@ import (
 
 // IsWellKnown implements checkip.Check.
 func IsWellKnown(ipaddr net.IP) (checkip.Result, error) {
+	res := checkip.Result{Name: "well known"}
+
 	wellKnown := []net.IP{
 		net.ParseIP("1.1.1.1"),
 		net.ParseIP("4.4.4.4"),
 		net.ParseIP("8.8.8.8"),
 	}
-	var known WellKnown
+
 	for _, wk := range wellKnown {
 		if string(ipaddr) == string(wk) {
-			known = true
+			res.Info = WellKnown(true)
 		}
 	}
-	return checkip.Result{Name: "well known", Info: known}, nil
+
+	return res, nil
 }
 
 // WellKnown implements checkip.Info.
@@ -42,10 +45,3 @@ func Example() {
 	results.PrintSummary()
 	// Output: well known      true
 }
-
-func ExampleCheck() {
-	ipaddr := net.ParseIP("2.2.2.2")
-	result, _ := IsWellKnown(ipaddr)
-	fmt.Println(result)
-	// Output: {well known Info false false}
-}