Remove unused exported errors

pkg/cloudprovider/providers/vsphere/vclib/connection.go

@@ -20,7 +20,6 @@ import (
 	"context"
 	"crypto/tls"
 	"encoding/pem"
-	"errors"
 	"net"
 	neturl "net/url"
 	"sync"
@@ -148,11 +147,6 @@ func (connection *VSphereConnection) Logout(ctx context.Context) {
 	}
 }
 
-var (
-	ErrCaCertNotReadable = errors.New("Could not read CA cert file")
-	ErrCaCertInvalid     = errors.New("Could not parse CA cert file")
-)
-
 // NewClient creates a new govmomi client for the VSphereConnection obj
 func (connection *VSphereConnection) NewClient(ctx context.Context) (*vim25.Client, error) {
 	url, err := soap.ParseURL(net.JoinHostPort(connection.Hostname, connection.Port))

pkg/cloudprovider/providers/vsphere/vclib/connection_test.go

@@ -180,8 +180,8 @@ func TestInvalidCaCert(t *testing.T) {
 
 	_, err := connection.NewClient(context.Background())
 
-	if err != vclib.ErrCaCertInvalid {
-		t.Fatalf("ErrCaCertInvalid should have occurred, instead got: %v", err)
+	if msg := err.Error(); !strings.Contains(msg, "invalid certificate") {
+		t.Fatalf("Expected invalid certificate error, got '%s'", msg)
 	}
 }