Removing unused imports when not using Viper

cobra/tpl/main.go

@@ -1,3 +1,16 @@
+// Copyright © 2021 Steve Francia <spf@spf13.com>.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 package tpl
 
 func MainTemplate() []byte {
@@ -23,10 +36,12 @@ func RootTemplate() []byte {
 package cmd
 
 import (
+{{- if .Viper }}
 	"fmt"
 	"os"
+{{ end }}
 	"github.com/spf13/cobra"
-{{ if .Viper }}
+{{- if .Viper }}
 	"github.com/spf13/viper"{{ end }}
 )