Revert "Allow to customize terminal theme (#4666)" (#4682)

This reverts commit a5e89b79d6.

src/common/user-store/preferences-helpers.ts

@@ -83,15 +83,6 @@ const colorTheme: PreferenceDescription<string> = {
   },
 };
 
-const terminalTheme: PreferenceDescription<string | undefined> = {
-  fromStore(val) {
-    return val || "";
-  },
-  toStore(val) {
-    return val || undefined;
-  },
-};
-
 const localeTimezone: PreferenceDescription<string> = {
   fromStore(val) {
     return val || moment.tz.guess(true) || "UTC";
@@ -360,7 +351,6 @@ export const DESCRIPTORS = {
   httpsProxy,
   shell,
   colorTheme,
-  terminalTheme,
   localeTimezone,
   allowUntrustedCAs,
   allowTelemetry,

src/common/user-store/user-store.ts

@@ -67,7 +67,6 @@ export class UserStore extends BaseStore<UserStoreModel> /* implements UserStore
   @observable allowErrorReporting: boolean;
   @observable allowUntrustedCAs: boolean;
   @observable colorTheme: string;
-  @observable terminalTheme: string;
   @observable localeTimezone: string;
   @observable downloadMirror: string;
   @observable httpsProxy?: string;
@@ -189,7 +188,6 @@ export class UserStore extends BaseStore<UserStoreModel> /* implements UserStore
     this.httpsProxy = DESCRIPTORS.httpsProxy.fromStore(preferences?.httpsProxy);
     this.shell = DESCRIPTORS.shell.fromStore(preferences?.shell);
     this.colorTheme = DESCRIPTORS.colorTheme.fromStore(preferences?.colorTheme);
-    this.terminalTheme = DESCRIPTORS.terminalTheme.fromStore(preferences?.terminalTheme);
     this.localeTimezone = DESCRIPTORS.localeTimezone.fromStore(preferences?.localeTimezone);
     this.allowUntrustedCAs = DESCRIPTORS.allowUntrustedCAs.fromStore(preferences?.allowUntrustedCAs);
     this.allowTelemetry = DESCRIPTORS.allowTelemetry.fromStore(preferences?.allowTelemetry);
@@ -214,7 +212,6 @@ export class UserStore extends BaseStore<UserStoreModel> /* implements UserStore
         httpsProxy: DESCRIPTORS.httpsProxy.toStore(this.httpsProxy),
         shell: DESCRIPTORS.shell.toStore(this.shell),
         colorTheme: DESCRIPTORS.colorTheme.toStore(this.colorTheme),
-        terminalTheme: DESCRIPTORS.terminalTheme.toStore(this.terminalTheme),
         localeTimezone: DESCRIPTORS.localeTimezone.toStore(this.localeTimezone),
         allowUntrustedCAs: DESCRIPTORS.allowUntrustedCAs.toStore(this.allowUntrustedCAs),
         allowTelemetry: DESCRIPTORS.allowTelemetry.toStore(this.allowTelemetry),