chore(core): delete center peek feature flag (#7281)

packages/common/env/src/global.ts

@@ -24,7 +24,6 @@ export const runtimeFlagsSchema = z.object({
   enablePayment: z.boolean(),
   enablePageHistory: z.boolean(),
   enableExperimentalFeature: z.boolean(),
-  enablePeekView: z.boolean(),
   allowLocalWorkspace: z.boolean(),
   // this is for the electron app
   serverUrlPrefix: z.string(),