refactor(@angular/cli): remove unused example database path from MCP server

Removes the unused exampleDatabasePath property from McpToolContext and its instantiation in mcp-server.ts, which were leftover from the removal of the find_examples MCP tool. Also removes the unused join import.

Author: clydin

packages/angular/cli/src/commands/mcp/mcp-server.ts

@@ -7,7 +7,7 @@
  */
 
 import { McpServer } from '@modelcontextprotocol/server';
-import { join, normalize, resolve } from 'node:path';
+import { normalize, resolve } from 'node:path';
 import { fileURLToPath } from 'node:url';
 import type { AngularWorkspace } from '../../utilities/config';
 import { VERSION } from '../../utilities/version';
@@ -166,7 +166,6 @@ for equivalent actions.
     {
       workspace: options.workspace,
       logger,
-      exampleDatabasePath: join(__dirname, '../../../lib/code-examples.db'),
       devservers: new Map<string, Devserver>(),
       host: restrictedHost,
       roots: resolvedRoots,

packages/angular/cli/src/commands/mcp/tools/tool-registry.ts

@@ -21,7 +21,6 @@ export interface McpToolContext {
   server: McpServer;
   workspace?: AngularWorkspace;
   logger: { warn(text: string): void };
-  exampleDatabasePath?: string;
   devservers: Map<string, Devserver>;
   host: Host;
   roots?: string[];