remove redundant line

Signed-off-by: husharp <[email protected]>

client/base_client.go

@@ -146,7 +146,6 @@ func (c *baseClient) memberLoop() {
 		failpoint.Inject("skipUpdateMember", func() {
 			failpoint.Continue()
 		})
-
 		if err := retry.WithBackoff(ctx, c.updateMember, &bo); err != nil {
 			log.Info("[pd] failed update member with retry", errs.ZapError(err))
 		}