Revert "feat(mcp): add OAuth redirect URI configuration for MCP servers (#7379)"

This reverts commit 40b275d7e6.

packages/opencode/src/config/config.ts

@@ -435,10 +435,6 @@ export namespace Config {
         .describe("OAuth client ID. If not provided, dynamic client registration (RFC 7591) will be attempted."),
       clientSecret: z.string().optional().describe("OAuth client secret (if required by the authorization server)"),
       scope: z.string().optional().describe("OAuth scopes to request during authorization"),
-      redirectUri: z
-        .string()
-        .optional()
-        .describe("OAuth redirect URI (default: http://127.0.0.1:19876/mcp/oauth/callback)."),
     })
     .strict()
     .meta({