Clean up metadata and format in user manual

Removed unnecessary metadata and format sections from the user manual.

Author: mckeea

DOCS/clcplus-core/CLC+Core_User_Manual_Issue_4.0_v1.qmd

@@ -3,18 +3,10 @@ title: "CLC+ Core User Manual"
 subtitle: "CLC+ Core production and provision of complementary consultancy"
 date: "2023-12-22"
 author: "European Environment Agency (EEA)"
-version: Issue 4.0
 category: "products"
 template-version: 1.0.0
 product-name: CLC+ Core User Manual
 description: "Product DESCRIPTION"
-metadata-files:
-  - ./includes/default.yml
-  
-format:
-  docx:
-    reference-doc: ../theme/template-atbd.docx
-    hidden: true
 ---