Remove redundant initialization for marks and tags (#1811)

Author: zenyusy

client.go

@@ -58,14 +58,6 @@ func run() {
 		app.ui.echoerrf("sync: %s", err)
 	}
 
-	if err := app.nav.readMarks(); err != nil {
-		app.ui.echoerrf("reading marks file: %s", err)
-	}
-
-	if err := app.nav.readTags(); err != nil {
-		app.ui.echoerrf("reading tags file: %s", err)
-	}
-
 	if err := app.readHistory(); err != nil {
 		app.ui.echoerrf("reading history file: %s", err)
 	}