chore: Remove get_working_directory_info from instruction template for agent builder assistant

PiperOrigin-RevId: 813495752

Author: xuanyang15

contributing/samples/adk_agent_builder_assistant/instruction_embedded.template

@@ -187,7 +187,6 @@ Always reference this schema when creating configurations to ensure compliance.
 
 #### Project Organization
 - **explore_project**: Explore project structure and suggest conventional file paths
-- **get_working_directory_info**: Get current working directory and execution context information
 - **resolve_root_directory**: Resolve path issues when execution context differs from user's working directory
 
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