Remove feature_right_panel_default_open

src/settings/Settings.tsx

@@ -363,14 +363,6 @@ export const SETTINGS: { [setting: string]: ISetting } = {
         displayName: _td("Show info about bridges in room settings"),
         default: false,
     },
-    "feature_right_panel_default_open": {
-        isFeature: true,
-        labsGroup: LabGroup.Rooms,
-        supportedLevels: LEVELS_FEATURE,
-        displayName: _td("Right panel stays open"),
-        description: _td("Defaults to room member list."),
-        default: false,
-    },
     "feature_jump_to_date": {
         isFeature: true,
         labsGroup: LabGroup.Messaging,

src/stores/right-panel/RightPanelStore.ts

@@ -377,23 +377,6 @@ export default class RightPanelStore extends ReadyWatchingStore {
             this.currentCard.state.initialEventScrollIntoView = undefined;
         }
 
-        // If the right panel stays open mode is used, and the panel was either
-        // closed or never shown for that room, then force it open and display
-        // the room member list.
-        if (
-            SettingsStore.getValue("feature_right_panel_default_open") &&
-            !this.byRoom[this.viewedRoomId ?? ""]?.isOpen
-        ) {
-            const history = [{ phase: RightPanelPhases.RoomMemberList }];
-            const room = this.viewedRoomId ? this.mxClient?.getRoom(this.viewedRoomId) : undefined;
-            if (!room?.isSpaceRoom()) {
-                history.unshift({ phase: RightPanelPhases.RoomSummary });
-            }
-            this.byRoom[this.viewedRoomId ?? ""] = {
-                isOpen: true,
-                history,
-            };
-        }
         this.emitAndUpdateSettings();
     }