fix: golangci-lint and gosec warnings

cli/imp/imp.go

@@ -11,15 +11,7 @@ import (
 	"github.com/spf13/cobra"
 )
 
-var (
-	importSensors      bool
-	importHumidities   bool
-	importPressures    bool
-	importTemperatures bool
-)
-
 func InitCmd(cmd *cobra.Command) error {
-
 	importCmd := &cobra.Command{
 		Use:   "import",
 		Args:  cobra.RangeArgs(1, 2),
@@ -34,7 +26,6 @@ import sqlite3:///var/cache/flucky/sqlite3.db postgres://user:password@host:port
 }
 
 func importSources(cmd *cobra.Command, args []string) error {
-
 	configFile, err := cmd.Flags().GetString("config")
 	if err != nil {
 		return fmt.Errorf("No config file defined")