unset region per user request

src/settings.ts

@@ -1015,13 +1015,13 @@ export class RemotelySaveSettingTab extends PluginSettingTab {
       .setDesc(t("settings_s3_accuratemtime_desc"))
       .addDropdown((dropdown) => {
         dropdown
-            .addOption("disable", t("disable"))
-            .addOption("enable", t("enable"));
+          .addOption("disable", t("disable"))
+          .addOption("enable", t("enable"));
 
         dropdown
-          .setValue(`${
-            this.plugin.settings.s3.useAccurateMTime ? "enable" : "disable"
-          }`)
+          .setValue(
+            `${this.plugin.settings.s3.useAccurateMTime ? "enable" : "disable"}`
+          )
           .onChange(async (val) => {
             if (val === "enable") {
               this.plugin.settings.s3.useAccurateMTime = true;
@@ -1032,7 +1032,6 @@ export class RemotelySaveSettingTab extends PluginSettingTab {
           });
       });
 
-
     let newS3RemotePrefix = this.plugin.settings.s3.remotePrefix || "";
     new Setting(s3Div)
       .setName(t("settings_remoteprefix"))