fix: remove duplicate error message

closes #30857

There are 2 ways the error message from any subcommand is printed:
1. through the debug log line that this PR removes
2. through the spf13/cobra package before the error type is returned to
   the caller.

Since the spf13/cobra package already prints out the error, there is no
use in redundantly printing out the error again within the debug log
line.

Signed-off-by: Jesse Simpson <jesse.simpson36@gmail.com>

cmd/helm/helm.go

@@ -41,7 +41,6 @@ func main() {
 	}
 
 	if err := cmd.Execute(); err != nil {
-		slog.Debug("error", slog.Any("error", err))
 		switch e := err.(type) {
 		case helmcmd.PluginError:
 			os.Exit(e.Code)